mirror of
https://github.com/postmannen/ctrl.git
synced 2025-01-07 04:49:17 +00:00
630 lines
20 KiB
Go
630 lines
20 KiB
Go
package main
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import (
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"crypto/sha256"
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"fmt"
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"log"
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"os"
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"sort"
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"strings"
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"sync"
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"github.com/fxamacker/cbor/v2"
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"github.com/go-playground/validator/v10"
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)
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// centralAuth
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type centralAuth struct {
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authorization *authorization
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}
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// newCentralAuth
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func newCentralAuth() *centralAuth {
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c := centralAuth{
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authorization: newAuthorization(),
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}
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return &c
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}
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// --------------------------------------
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type authorization struct {
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authSchema *authSchema
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}
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func newAuthorization() *authorization {
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a := authorization{
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authSchema: newAuthSchema(),
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}
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return &a
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}
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// authSchema holds both the main schema to update by operators,
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// and also the indvidual node generated data based on the main schema.
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type authSchema struct {
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// node fromNode commands
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schemaMain *schemaMain
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schemaGenerated *schemaGenerated
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validator *validator.Validate
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}
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type node string
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type command string
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type nodeGroup string
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type commandGroup string
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type schemaMain struct {
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ACLMap map[node]map[node]map[command]struct{}
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NodeGroupMap map[nodeGroup]map[node]struct{}
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CommandGroupMap map[commandGroup]map[command]struct{}
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mu sync.Mutex
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}
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func newSchemaMain() *schemaMain {
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s := schemaMain{
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ACLMap: make(map[node]map[node]map[command]struct{}),
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NodeGroupMap: make(map[nodeGroup]map[node]struct{}),
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CommandGroupMap: make(map[commandGroup]map[command]struct{}),
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}
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return &s
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}
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type schemaGenerated struct {
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ACLsToConvert map[node]map[node]map[command]struct{}
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GeneratedACLsMap map[node]NodeDataWithHash
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mu sync.Mutex
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}
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func newSchemaGenerated() *schemaGenerated {
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s := schemaGenerated{
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ACLsToConvert: map[node]map[node]map[command]struct{}{},
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GeneratedACLsMap: make(map[node]NodeDataWithHash),
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}
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return &s
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}
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func newAuthSchema() *authSchema {
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a := authSchema{
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schemaMain: newSchemaMain(),
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schemaGenerated: newSchemaGenerated(),
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validator: validator.New(),
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}
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return &a
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}
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// NodeDataWithHash is the serialized representation node specific value in the authSchema.
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// There is also a sha256 hash of the data.
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type NodeDataWithHash struct {
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// data is all the auth data for a specific node encoded in json.
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Data []byte
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// hash is the sha256 hash of the data.
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Hash [32]byte
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}
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func (a *authSchema) convToActualNodeSlice(n node) []node {
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nodes := []node{}
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// Check if we are given a nodeGroup variable, and if we are, get all the
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// nodes for that group.
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if strings.HasPrefix(string(n), "grp_nodes_") {
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for nd := range a.schemaMain.NodeGroupMap[nodeGroup(n)] {
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nodes = append(nodes, nd)
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}
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} else {
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// No group found meaning a single node was given as an argument.
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nodes = []node{n}
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}
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return nodes
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}
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// convertToActualCommandSlice will convert the given argument into a slice representation.
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// If the argument is a group, then all the members of that group will be expanded into
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// the slice.
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// If the argument is not a group kind of value, then only a slice with that single
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// value is returned.
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func (a *authSchema) convertToActualCommandSlice(c command) []command {
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commands := []command{}
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// Check if we are given a nodeGroup variable, and if we are, get all the
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// nodes for that group.
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if strings.HasPrefix(string(c), "grp_cmds_") {
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for cmd := range a.schemaMain.CommandGroupMap[commandGroup(c)] {
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commands = append(commands, cmd)
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}
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} else {
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// No group found meaning a single node was given as an argument, so we
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// just put the single node given as the only value in the slice.
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commands = []command{c}
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}
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return commands
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}
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// aclAdd will add a command for a fromNode.
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// If the node or the fromNode do not exist they will be created.
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// The json encoded schema for a node and the hash of those data
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// will also be generated.
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func (a *authSchema) aclAdd(host node, source node, cmd command) {
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a.schemaMain.mu.Lock()
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defer a.schemaMain.mu.Unlock()
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// Check if node exists in map.
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if _, ok := a.schemaMain.ACLMap[host]; !ok {
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// log.Printf("info: did not find node=%v in map, creating map[fromnode]map[command]struct{}\n", n)
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a.schemaMain.ACLMap[host] = make(map[node]map[command]struct{})
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}
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// Check if also source node exists in map
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if _, ok := a.schemaMain.ACLMap[host][source]; !ok {
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// log.Printf("info: did not find node=%v in map, creating map[fromnode]map[command]struct{}\n", fn)
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a.schemaMain.ACLMap[host][source] = make(map[command]struct{})
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}
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a.schemaMain.ACLMap[host][source][cmd] = struct{}{}
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// err := a.generateJSONForHostOrGroup(n)
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err := a.generateACLsForAllNodes()
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if err != nil {
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er := fmt.Errorf("error: addCommandForFromNode: %v", err)
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log.Printf("%v\n", er)
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}
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// fmt.Printf(" * DEBUG: aclNodeFromnodeCommandAdd: a.schemaMain.ACLMap=%v\n", a.schemaMain.ACLMap)
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}
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// aclDeleteCommand will delete the specified command from the fromnode.
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func (a *authSchema) aclDeleteCommand(host node, source node, cmd command) error {
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a.schemaMain.mu.Lock()
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defer a.schemaMain.mu.Unlock()
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// Check if node exists in map.
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if _, ok := a.schemaMain.ACLMap[host]; !ok {
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return fmt.Errorf("authSchema: no such node=%v to delete on in schema exists", host)
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}
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if _, ok := a.schemaMain.ACLMap[host][source]; !ok {
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return fmt.Errorf("authSchema: no such fromnode=%v to delete on in schema for node=%v exists", source, host)
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}
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if _, ok := a.schemaMain.ACLMap[host][source][cmd]; !ok {
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return fmt.Errorf("authSchema: no such command=%v from fromnode=%v to delete on in schema for node=%v exists", cmd, source, host)
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}
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delete(a.schemaMain.ACLMap[host][source], cmd)
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err := a.generateACLsForAllNodes()
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if err != nil {
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er := fmt.Errorf("error: aclNodeFromNodeCommandDelete: %v", err)
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log.Printf("%v\n", er)
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}
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return nil
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}
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// aclDeleteSource will delete specified source node and all commands specified for it.
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func (a *authSchema) aclDeleteSource(host node, source node) error {
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a.schemaMain.mu.Lock()
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defer a.schemaMain.mu.Unlock()
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// Check if node exists in map.
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if _, ok := a.schemaMain.ACLMap[host]; !ok {
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return fmt.Errorf("authSchema: no such node=%v to delete on in schema exists", host)
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}
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if _, ok := a.schemaMain.ACLMap[host][source]; !ok {
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return fmt.Errorf("authSchema: no such fromnode=%v to delete on in schema for node=%v exists", source, host)
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}
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delete(a.schemaMain.ACLMap[host], source)
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err := a.generateACLsForAllNodes()
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if err != nil {
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er := fmt.Errorf("error: aclNodeFromnodeDelete: %v", err)
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log.Printf("%v\n", er)
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}
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return nil
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}
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// generateACLsForAllNodes will generate a json encoded representation of the node specific
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// map values of authSchema, along with a hash of the data.
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//
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// Will range over all the host elements defined in the ACL, create a new authParser for each one,
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// and run a small state machine on each element to create the final ACL result to be used at host
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// nodes.
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// The result will be written to the schemaGenerated.ACLsToConvert map.
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func (a *authSchema) generateACLsForAllNodes() error {
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a.schemaGenerated.ACLsToConvert = make(map[node]map[node]map[command]struct{})
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// Rangle all ACL's. Both for single hosts, and group of hosts.
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// ACL's that are for a group of hosts will be generated split
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// out in it's indivial host name, and that current ACL will
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// be added to the individual host in the ACLsToConvert map to
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// built a complete picture of what the ACL's looks like for each
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// individual hosts.
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for n := range a.schemaMain.ACLMap {
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//a.schemaGenerated.ACLsToConvert = make(map[node]map[node]map[command]struct{})
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ap := newAuthParser(n, a)
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ap.parse()
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}
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// ACLsToConvert got the complete picture of what ACL's that
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// are defined for each individual host node.
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// Range this map, and generate a JSON representation of all
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// the ACL's each host.
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func() {
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for n, m := range a.schemaGenerated.ACLsToConvert {
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// cbor marshal the data of the ACL map to store for the host node.
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cb, err := cbor.Marshal(m)
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if err != nil {
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er := fmt.Errorf("error: failed to generate json for host in schemaGenerated: %v", err)
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log.Printf("%v\n", er)
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os.Exit(1)
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}
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// Create the hash for the data for the host node.
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hash := func() [32]byte {
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sns := a.nodeMapToSlice(n)
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b, err := cbor.Marshal(sns)
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if err != nil {
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err := fmt.Errorf("error: authSchema, json for hash: %v", err)
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log.Printf("%v\n", err)
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return [32]byte{}
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}
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hash := sha256.Sum256(b)
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return hash
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}()
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// Store both the cbor marshaled data and the hash in a structure.
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nd := NodeDataWithHash{
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Data: cb,
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Hash: hash,
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}
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// and then store the cbor encoded data and the hash in the generated map.
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a.schemaGenerated.GeneratedACLsMap[n] = nd
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}
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}()
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return nil
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}
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// sourceNode is used to convert the ACL map structure of a host into a slice,
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// and we then use the slice representation of the ACL to create the hash for
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// a specific host node.
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type sourceNode struct {
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HostNode node
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SourceCommands []sourceNodeCommands
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}
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// sourceNodeCommand is used to convert the ACL map structure of a host into a slice,
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// and we then use the slice representation of the ACL to create the hash for
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// a specific host node.
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type sourceNodeCommands struct {
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Source node
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Commands []command
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}
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// nodeMapToSlice will return a fromNode structure, with the map fromNode part
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// of the map converted into a slice. Both the from node, and the commands
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// defined for each fromNode are sorted.
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// This function is used when creating the hash of the nodeMap since we can not
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// guarantee the order of a hash map, but we can with a slice.
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func (a *authSchema) nodeMapToSlice(host node) sourceNode {
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srcNodes := sourceNode{
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HostNode: host,
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}
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for sn, commandMap := range a.schemaGenerated.ACLsToConvert[host] {
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srcC := sourceNodeCommands{
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Source: sn,
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}
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for cmd := range commandMap {
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srcC.Commands = append(srcC.Commands, cmd)
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}
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// sort.Strings(fnc.Commands)
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sort.SliceStable(srcC.Commands, func(i, j int) bool {
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return srcC.Commands[i] < srcC.Commands[j]
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})
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srcNodes.SourceCommands = append(srcNodes.SourceCommands, srcC)
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}
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sort.SliceStable(srcNodes.SourceCommands, func(i, j int) bool {
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return srcNodes.SourceCommands[i].Source < srcNodes.SourceCommands[j].Source
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})
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// fmt.Printf(" * nodeMapToSlice: fromNodes: %#v\n", fns)
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return srcNodes
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}
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// groupNodesAddNode adds a node to a group. If the group does
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// not exist it will be created.
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func (a *authSchema) groupNodesAddNode(ng nodeGroup, n node) {
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err := a.validator.Var(ng, "startswith=grp_nodes_")
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if err != nil {
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log.Printf("error: group name do not start with grp_nodes_: %v\n", err)
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return
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}
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a.schemaMain.mu.Lock()
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defer a.schemaMain.mu.Unlock()
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if _, ok := a.schemaMain.NodeGroupMap[ng]; !ok {
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a.schemaMain.NodeGroupMap[ng] = make(map[node]struct{})
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}
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a.schemaMain.NodeGroupMap[ng][n] = struct{}{}
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// fmt.Printf(" * groupNodesAddNode: After adding to group node looks like: %+v\n", a.schemaMain.NodeGroupMap)
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}
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// groupNodesDeleteNode deletes a node from a group in the map.
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func (a *authSchema) groupNodesDeleteNode(ng nodeGroup, n node) {
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a.schemaMain.mu.Lock()
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defer a.schemaMain.mu.Unlock()
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if _, ok := a.schemaMain.NodeGroupMap[ng][n]; !ok {
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log.Printf("info: no such node with name=%v found in group=%v\n", ng, n)
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return
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}
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delete(a.schemaMain.NodeGroupMap[ng], n)
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//fmt.Printf(" * After deleting nodeGroup map looks like: %+v\n", a.schemaMain.NodeGroupMap)
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}
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// groupNodesDeleteGroup deletes a nodeGroup from map.
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func (a *authSchema) groupNodesDeleteGroup(ng nodeGroup) {
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a.schemaMain.mu.Lock()
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defer a.schemaMain.mu.Unlock()
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if _, ok := a.schemaMain.NodeGroupMap[ng]; !ok {
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log.Printf("info: no such group found: %v\n", ng)
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return
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}
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delete(a.schemaMain.NodeGroupMap, ng)
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//fmt.Printf(" * After deleting nodeGroup map looks like: %+v\n", a.schemaMain.NodeGroupMap)
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}
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// -----
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// groupCommandsAddCommand adds a command to a group. If the group does
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// not exist it will be created.
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func (a *authSchema) groupCommandsAddCommand(cg commandGroup, c command) {
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err := a.validator.Var(cg, "startswith=grp_cmds_")
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if err != nil {
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log.Printf("error: group name do not start with grp_cmds_ : %v\n", err)
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return
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}
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a.schemaMain.mu.Lock()
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defer a.schemaMain.mu.Unlock()
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if _, ok := a.schemaMain.CommandGroupMap[cg]; !ok {
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a.schemaMain.CommandGroupMap[cg] = make(map[command]struct{})
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}
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a.schemaMain.CommandGroupMap[cg][c] = struct{}{}
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//fmt.Printf(" * groupCommandsAddCommand: After adding command=%v to command group=%v map looks like: %+v\n", c, cg, a.schemaMain.CommandGroupMap)
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}
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// groupCommandsDeleteCommand deletes a command from a group in the map.
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func (a *authSchema) groupCommandsDeleteCommand(cg commandGroup, c command) {
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a.schemaMain.mu.Lock()
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defer a.schemaMain.mu.Unlock()
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if _, ok := a.schemaMain.CommandGroupMap[cg][c]; !ok {
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log.Printf("info: no such command with name=%v found in group=%v\n", c, cg)
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return
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}
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delete(a.schemaMain.CommandGroupMap[cg], c)
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//fmt.Printf(" * After deleting command=%v from group=%v map looks like: %+v\n", c, cg, a.schemaMain.CommandGroupMap)
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}
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// groupCommandDeleteGroup deletes a commandGroup map.
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func (a *authSchema) groupCommandDeleteGroup(cg commandGroup) {
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a.schemaMain.mu.Lock()
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defer a.schemaMain.mu.Unlock()
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if _, ok := a.schemaMain.CommandGroupMap[cg]; !ok {
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log.Printf("info: no such group found: %v\n", cg)
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return
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}
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delete(a.schemaMain.CommandGroupMap, cg)
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//fmt.Printf(" * After deleting commandGroup=%v map looks like: %+v\n", cg, a.schemaMain.CommandGroupMap)
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}
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// printMaps will print the auth maps for testing output.
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func (c *centralAuth) printMaps() {
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{
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fmt.Println("\n-----------------PRINTING OUT MAPS------------------------")
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fmt.Println("----schemaMain------")
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c.authorization.authSchema.schemaMain.mu.Lock()
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for k, v := range c.authorization.authSchema.schemaMain.ACLMap {
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fmt.Printf("%v: %+v\n", k, v)
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}
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c.authorization.authSchema.schemaMain.mu.Unlock()
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fmt.Println("----schemaGenerated------")
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c.authorization.authSchema.schemaGenerated.mu.Lock()
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for k, v := range c.authorization.authSchema.schemaGenerated.GeneratedACLsMap {
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fmt.Printf("node: %v, NodeDataSerialized: %v\n", k, string(v.Data))
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fmt.Printf("node: %v, Hash: %v\n", k, v.Hash)
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}
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c.authorization.authSchema.schemaGenerated.mu.Unlock()
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}
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fmt.Println("-----------------END OF PRINTING OUT MAPS------------------------")
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fmt.Println()
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}
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func main() {
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// c := newCentralAuth()
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// -----------General testing and creation of some data----------------
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// // Start concurrent updating of the schema.
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// var wg sync.WaitGroup
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// for i := 0; i < 1; i++ {
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// wg.Add(1)
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// go func() {
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// defer wg.Done()
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// c.authorization.authSchema.aclNodeFromnodeCommandAdd("ship1", "operator2", "rm -rf")
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// c.authorization.authSchema.aclNodeFromnodeCommandAdd("ship1", "operator1", "ls -lt")
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// c.authorization.authSchema.aclNodeFromnodeCommandAdd("ship1", "operator1", "ls -lt")
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// c.authorization.authSchema.aclNodeFromnodeCommandAdd("ship1", "operator2", "ls -l")
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// c.authorization.authSchema.aclNodeFromnodeCommandAdd("ship3", "operator3", "ls -lt")
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// c.authorization.authSchema.aclNodeFromnodeCommandAdd("ship3", "operator3", "vi /etc/hostname")
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// c.authorization.authSchema.aclNodeFromNodeCommandDelete("ship3", "operator2", "ls -lt")
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// c.authorization.authSchema.aclNodeFromnodeDelete("ship3", "operator3")
|
|
// }()
|
|
//
|
|
// wg.Add(1)
|
|
// go func() {
|
|
// defer wg.Done()
|
|
// fmt.Println("----schemaMain------")
|
|
// c.authorization.authSchema.schemaMain.mu.Lock()
|
|
// for _, v := range c.authorization.authSchema.schemaMain.NodeMap {
|
|
// fmt.Printf("%+v\n", v)
|
|
// }
|
|
// c.authorization.authSchema.schemaMain.mu.Unlock()
|
|
//
|
|
// fmt.Println("----schemaGenerated------")
|
|
// c.authorization.authSchema.schemaGenerated.mu.Lock()
|
|
// for k, v := range c.authorization.authSchema.schemaGenerated.NodeMap {
|
|
// fmt.Printf("node: %v, NodeDataSerialized: %v\n", k, string(v.Data))
|
|
// fmt.Printf("node: %v, Hash: %v\n", k, v.Hash)
|
|
// }
|
|
// c.authorization.authSchema.schemaGenerated.mu.Unlock()
|
|
// }()
|
|
// }
|
|
// wg.Wait()
|
|
// c.printMaps()
|
|
|
|
// // --------- Testing as needed for request types--------------
|
|
// fmt.Println("--------- Testing as needed for request types--------------")
|
|
//
|
|
// // Get the hash for a node schema
|
|
// {
|
|
// c.authorization.authSchema.schemaGenerated.mu.Lock()
|
|
// h := c.authorization.authSchema.schemaGenerated.NodeMap["ship1"].Hash
|
|
// c.authorization.authSchema.schemaGenerated.mu.Unlock()
|
|
//
|
|
// fmt.Printf("testing: hash for ship1 = %v\n", h)
|
|
// }
|
|
|
|
// // Generate json to send to node in message with nodeMap and hash
|
|
// {
|
|
// var tmpData map[string]map[string]struct{}
|
|
// nodeName := node("ship1")
|
|
// err := json.Unmarshal(c.authorization.authSchema.schemaGenerated.NodeMap[nodeName].Data, &tmpData)
|
|
// if err != nil {
|
|
// log.Printf("error: failed to unmarshal schemaGenerated.NodeMap: %v\n", err)
|
|
// os.Exit(1)
|
|
// }
|
|
//
|
|
// fmt.Printf("\n * Data for %v: %#v\n", nodeName, tmpData)
|
|
//
|
|
// }
|
|
|
|
// // Test node group.
|
|
// {
|
|
// fmt.Println("\n--------------Group testing----------------")
|
|
// fmt.Println(" * ADDING NODES TO GROUPS")
|
|
// c.authorization.authSchema.groupNodesAddNode("grp_nodes_GROUP_A", "ship1")
|
|
// c.authorization.authSchema.groupNodesAddNode("grp_nodes_GROUP_A", "ship2")
|
|
// c.authorization.authSchema.groupNodesAddNode("grp_nodes_GROUP_A", "ship3")
|
|
// c.authorization.authSchema.groupNodesAddNode("grp_nodes_GROUP_B", "ship2")
|
|
// c.authorization.authSchema.groupNodesAddNode("grp_nodes_GROUP_C", "ship3")
|
|
//
|
|
// fmt.Println("\n * Deleting NODES FROM GROUPS")
|
|
// c.authorization.authSchema.groupNodesDeleteNode("grp_nodes_GROUP_A", "ship2")
|
|
//
|
|
// fmt.Println("\n * Deleting NODE GROUPS")
|
|
// c.authorization.authSchema.groupNodesDeleteGroup("grp_nodes_GROUP_B")
|
|
//
|
|
// // -----
|
|
//
|
|
// fmt.Println("\n * ADDING COMMANDS TO COMMAND GROUPS")
|
|
// c.authorization.authSchema.groupCommandsAddCommand("grp_cmds_C_GROUP_A", "echo apekatt")
|
|
// c.authorization.authSchema.groupCommandsAddCommand("grp_cmds_C_GROUP_A", "ls -lt")
|
|
// c.authorization.authSchema.groupCommandsAddCommand("grp_cmds_C_GROUP_A", "rm -rf")
|
|
// c.authorization.authSchema.groupCommandsAddCommand("grp_cmds_C_GROUP_B", "df -ah")
|
|
// c.authorization.authSchema.groupCommandsAddCommand("grp_cmds_C_GROUP_C", "cat /etc/hosts")
|
|
//
|
|
// fmt.Println("\n * Deleting COMMANDS FROM GROUPS")
|
|
// c.authorization.authSchema.groupCommandsDeleteCommand("grp_cmds_C_GROUP_A", "ls -lt")
|
|
//
|
|
// fmt.Println("\n * Deleting COMMAND GROUP")
|
|
// c.authorization.authSchema.groupCommandDeleteGroup("grp_cmds_C_GROUP_B")
|
|
// }
|
|
|
|
//{
|
|
// fmt.Println("\n --------- GROUP, add nodes to a group, and apply acl's --------")
|
|
// c.authorization.authSchema.groupNodesAddNode("grp_nodes_operators", "operator1")
|
|
// c.authorization.authSchema.groupNodesAddNode("grp_nodes_operators", "operator2")
|
|
//
|
|
// c.authorization.authSchema.groupNodesAddNode("grp_nodes_group100", "ship100")
|
|
// c.authorization.authSchema.groupNodesAddNode("grp_nodes_group100", "ship101")
|
|
// c.authorization.authSchema.groupNodesAddNode("grp_nodes_group100", "ship102")
|
|
//
|
|
// c.authorization.authSchema.groupCommandsAddCommand("grp_cmds_1", "dmesg")
|
|
//
|
|
// // Also add a non group user
|
|
// c.authorization.authSchema.aclCommandAdd("grp_nodes_group100", "admin", "useradd -m kongen")
|
|
// // c.authorization.authSchema.aclNodeFromnodeCommandAdd("grp_nodes_group100", "operator1", "useradd -m dmesg")
|
|
// // c.authorization.authSchema.aclNodeFromnodeCommandAdd("grp_nodes_group100", "grp_nodes_operators", "dmesg")
|
|
// c.authorization.authSchema.aclCommandAdd("grp_nodes_group100", "grp_nodes_operators", "grp_cmds_1")
|
|
// fmt.Println("\n --------- END OF GROUP NODES ADD NODE TESTING ----------")
|
|
//}
|
|
|
|
//c.printMaps()
|
|
|
|
// {
|
|
// fmt.Println("\n --------- GROUP, on all nodes, delete the command for operator1 --------")
|
|
// c.authorization.authSchema.aclNodeFromNodeCommandDelete("grp_nodes_group100", "operator1", "useradd -m operator")
|
|
//
|
|
// fmt.Println("\n --------- END ----------")
|
|
// }
|
|
//
|
|
// c.printMaps()
|
|
|
|
// {
|
|
// fmt.Println("\n --------- GROUP, on all nodes, delete fromnode operator1 --------")
|
|
// c.authorization.authSchema.aclNodeFromnodeDelete("grp_nodes_group100", "operator1")
|
|
//
|
|
// fmt.Println("\n --------- END OF DELETE A FROMNODE ----------")
|
|
// }
|
|
//
|
|
// c.printMaps()
|
|
|
|
//{
|
|
// fmt.Println("\n --------- GROUP, delete node from group --------")
|
|
// c.authorization.authSchema.groupNodesDeleteNode("grp_nodes_group100", "ship100")
|
|
// c.authorization.authSchema.generateJSONForAllNodes()
|
|
//
|
|
// fmt.Println("\n --------- END OF DELETE A FROMNODE ----------")
|
|
//}
|
|
//
|
|
//c.printMaps()
|
|
|
|
}
|