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gofmt | update readme (client cli) + minmod

This commit is contained in:
Adrien Marquès 2018-07-25 14:19:44 +02:00
parent 65f08ff10e
commit 78d34dddb4
4 changed files with 153 additions and 80 deletions
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37
README.md
View File

@ -3,11 +3,7 @@
**Copyright (C) 2017 xdrm-brackets**
[![Go version](https://img.shields.io/badge/go_version-1.10.3-blue.svg)](https://golang.org/doc/go1.10)
[![Go Report Card](https://goreportcard.com/badge/git.xdrm.io/logauth/schastsp)](https://goreportcard.com/report/git.xdrm.io/logauth/schastsp)
[![Go doc](https://godoc.org/git.xdrm.io/logauth/schastsp?status.svg)](https://godoc.org/git.xdrm.io/logauth/schastsp)
[![Go version](https://img.shields.io/badge/go_version-1.10.3-blue.svg)](https://golang.org/doc/go1.10) [![Go Report Card](https://goreportcard.com/badge/git.xdrm.io/logauth/schastsp)](https://goreportcard.com/report/git.xdrm.io/logauth/schastsp) [![Go doc](https://godoc.org/git.xdrm.io/logauth/schastsp?status.svg)](https://godoc.org/git.xdrm.io/logauth/schastsp)
## Overview
@ -84,3 +80,34 @@ go install git.xdrm.io/logauth/schastsp/cmd/client;
go install git.xdrm.io/logauth/schastsp/cmd/server;
```
The executables are now available in your `$GOBIN` (*i.e. `$GOPATH/bin`*) folder.
## Client
----
### 1. Usage
```bash
client <command> [options]
```
Available commands are :
- `-req` generates a new request into standard output
- `-res` reads and manages a response from standard input
- `-sync` generates a synchronization key into standard output (*i.e. resets the system*)
Available options are :
- `-file` sets the folder where the keys are (or will be) stored.
- `-win` sets the window value (in milliseconds). Typically the maximum transmission time.
- `-min` sets the minimum cyclic-hash depth.
- `-max` sets the maximum cyclic-hash depth.
- `-thr` sets the cyclic-hash threshold. This value represents at which offset of the key's TTL the key will be generated. It also corresponds to the number of time the client can desynchronize before becoming impossible to synchronize again.

99
client/client.go
View File

@ -3,8 +3,8 @@ package client
import (
"errors"
"fmt"
"git.xdrm.io/logauth/schastsp/internal/keyset"
"git.xdrm.io/logauth/schastsp/context"
"git.xdrm.io/logauth/schastsp/internal/keyset"
"git.xdrm.io/logauth/schastsp/internal/scha"
"io"
)
@ -14,11 +14,11 @@ const DEBUG = false
/* (1) Structure
---------------------------------------------------------*/
type T struct {
ctx *context.T // shared context
key *keyset.T // current key
sync *keyset.T // next bufferised key
fkey *config // key file management
fsync *config // sync file management
ctx *context.T // shared context
key *keyset.T // current key
sync *keyset.T // next bufferised key
fkey *config // key file management
fsync *config // sync file management
}
/* (2) Constructor
@ -34,16 +34,22 @@ func New(ctx *context.T, saveDir string) (*T, error) {
inst := new(T)
/* (1) Store context */
if ctx == nil { return nil, errors.New("Context must not be nil"); }
if ctx == nil {
return nil, errors.New("Context must not be nil")
}
inst.ctx = ctx
/* (2) Get file management for KEY */
inst.fkey, err = Config(saveDir, "key")
if err != nil { return nil, err }
if err != nil {
return nil, err
}
/* (3) Get file management for SYNC */
inst.fsync, err = Config(saveDir, "sync")
if err != nil { return nil, err }
if err != nil {
return nil, err
}
/* (4) Restore from config */
inst.updateConfig()
@ -66,16 +72,26 @@ func (c *T) Send(w io.Writer) error {
x2 := make([]byte, scha.HSIZE)
err := c.generateRequest(x1, x2)
if err != nil { return err }
if err != nil {
return err
}
/* (2) Write request into writer */
written, err := w.Write(x1)
if err != nil { return err }
if written != len(x1) { return errors.New("Cannot write x1") }
if err != nil {
return err
}
if written != len(x1) {
return errors.New("Cannot write x1")
}
written, err = w.Write(x2)
if err != nil { return err }
if written != len(x1) { return errors.New("Cannot write x2") }
if err != nil {
return err
}
if written != len(x1) {
return errors.New("Cannot write x2")
}
return nil
}
@ -93,10 +109,16 @@ func (c *T) Receive(r io.Reader) error {
---------------------------------------------------------*/
errCode := make([]byte, 1)
read, err := r.Read(errCode)
if err != nil { return err }
if uint16(read) != 1 { return errors.New("Cannot read error code") }
if err != nil {
return err
}
if uint16(read) != 1 {
return errors.New("Cannot read error code")
}
if DEBUG { fmt.Printf("ERROR CODE : %d\n", errCode[0]) }
if DEBUG {
fmt.Printf("ERROR CODE : %d\n", errCode[0])
}
/* (2) Manage success
---------------------------------------------------------*/
@ -105,7 +127,9 @@ func (c *T) Receive(r io.Reader) error {
/* (1) If pending migration -> migrate */
if c.key.MigrationCode() == 2 {
c.migrateKey()
if DEBUG { fmt.Printf("*** VALIDATED MIGRATION\n") }
if DEBUG {
fmt.Printf("*** VALIDATED MIGRATION\n")
}
}
/* (2) No error anyway */
@ -118,28 +142,37 @@ func (c *T) Receive(r io.Reader) error {
/* (1) Read y1 */
y1 := make([]byte, scha.HSIZE)
read, err = r.Read(y1)
if err != nil { return err }
if uint16(read) != scha.HSIZE { return errors.New("Cannot read y1") }
if err != nil {
return err
}
if uint16(read) != scha.HSIZE {
return errors.New("Cannot read y1")
}
/* (2) Read y2 */
y2 := make([]byte, scha.HSIZE)
read, err = r.Read(y2)
if err != nil { return err }
if uint16(read) != scha.HSIZE { return errors.New("Cannot read enough y2") }
if err != nil {
return err
}
if uint16(read) != scha.HSIZE {
return errors.New("Cannot read enough y2")
}
/* (3) Manage rescue mode */
err = c.rescue(y1, y2)
if err != nil { return err }
if err != nil {
return err
}
if DEBUG { fmt.Printf("*** MIGRATION PREPARED\n") }
if DEBUG {
fmt.Printf("*** MIGRATION PREPARED\n")
}
return nil
}
/* (5) Returns a synchronisation key (first server connection)
*
* @return key<[]byte> Synchronisation key
@ -148,17 +181,19 @@ func (c *T) Receive(r io.Reader) error {
---------------------------------------------------------*/
func (c *T) SynchronisationKey() ([]byte, error) {
/* (1) Reset keys so no value can be guessed*/
c.migrateKey(); // 1: copies 'sync' into 'key'
c.migrateKey(); // 2: copies random new 'sync' into 'key' (old 'sync)
/* (1) Reset keys so no value can be guessed */
c.migrateKey() // 1: copies 'sync' into 'key'
c.migrateKey() // 2: copies random new 'sync' into 'key' (old 'sync)
/* (2) Get current hash */
hash, err := c.key.CurrentHash()
if err != nil { return nil, err }
if err != nil {
return nil, err
}
/* (3) Decrement key so 'hash' is valid */
c.key.Decrement()
/* (4) Return key */
return hash, nil;
return hash, nil
}

93
cmd/client/client.go
View File

@ -1,38 +1,38 @@
package main
import (
"time"
"os"
"flag"
"fmt"
"git.xdrm.io/logauth/schastsp/context"
"git.xdrm.io/logauth/schastsp/client"
"git.xdrm.io/logauth/schastsp/context"
"os"
"time"
)
func main(){
func main() {
executionStart := time.Now().UnixNano()
/* (1) Flag management (cli arguments)
---------------------------------------------------------*/
/* (1) Secret folder */
clientConfigPath := flag.String("file", "/tmp/schastsp_keys", "Configuration folder, it will contain sensitive data (keys), make sure to control it properly. (default: /tmp/schastsp_keys)")
clientConfigPath := flag.String("file", "/tmp/schastsp_keys", "Configuration folder, it will contain sensitive data (keys), make sure to control it properly.")
/* (2) request | response */
isRequest := flag.Bool("req", false, "Will generate a request into standard output.")
isResponse := flag.Bool("res", false, "Will proceed a response management from standard input.")
/* (3) Context window size */
winSize := flag.Uint("win", 2000, "Time window value in ms. (default: 2000)")
winSize := flag.Uint("win", 2000, "Time window value in ms.")
/* (4) Context minimum depth value */
minDepth := flag.Uint("min", 0x0f0, "Minimum depth value. (default: 240)")
minDepth := flag.Uint("min", 0x0f0, "Minimum depth value.")
/* (5) Context maximum depth value */
maxDepth := flag.Uint("max", 0xfff, "Maximum depth value. (default: 4095)")
maxDepth := flag.Uint("max", 0xfff, "Maximum depth value.")
/* (6) Context depth threshold */
thrDepth := flag.Uint("thr", 0x00a, "Depth threshold protecting minimum depth to be reached. (default: 10)")
thrDepth := flag.Uint("thr", 0x00a, "Depth threshold protecting minimum depth to be reached.")
/* (7) Synchronisation request (special order) */
syncRequest := flag.Bool("sync", false, "If set, proceeds a synchronisation request and outputs the synchronisation key.")
@ -40,72 +40,81 @@ func main(){
/* (8) Parse flags */
flag.Parse()
/* (2) Create context + client
---------------------------------------------------------*/
/* (1) Create context */
ctx, err := context.Create( float64(*winSize) / 1e3, uint16(*minDepth), uint16(*thrDepth), uint16(*maxDepth) );
if err != nil { os.Stderr.WriteString( fmt.Sprintf("[CLIENT_ERROR:context] %s\n", err) ); return }
ctx, err := context.Create(float64(*winSize)/1e3, uint16(*minDepth), uint16(*thrDepth), uint16(*maxDepth))
if err != nil {
os.Stderr.WriteString(fmt.Sprintf("[CLIENT_ERROR:context] %s\n", err))
return
}
/* (2) Create client */
cli, err := client.New(ctx, *clientConfigPath)
if err != nil { os.Stderr.WriteString( fmt.Sprintf("[CLIENT_ERROR:client] %s\n", err) ); return }
if err != nil {
os.Stderr.WriteString(fmt.Sprintf("[CLIENT_ERROR:client] %s\n", err))
return
}
/* (3) Dispatch execution
---------------------------------------------------------*/
/* (1) If synchronisation request */
if *syncRequest {
synchronisationRequest(cli);
synchronisationRequest(cli)
/* (2) If request */
/* (2) If request */
} else if *isRequest {
err = cli.Send(os.Stdout)
if err != nil { os.Stderr.WriteString( fmt.Sprintf("[CLIENT_ERROR:request] %s\n", err) ) }
if err != nil {
os.Stderr.WriteString(fmt.Sprintf("[CLIENT_ERROR:request] %s\n", err))
}
/* (3) If response */
/* (3) If response */
} else if *isResponse {
err = cli.Receive(os.Stdin)
if err != nil { os.Stderr.WriteString( fmt.Sprintf("[CLIENT_ERROR:response] %s\n", err) ); return }
if err != nil {
os.Stderr.WriteString(fmt.Sprintf("[CLIENT_ERROR:response] %s\n", err))
return
}
/* (4) Else -> nothing */
}else {
os.Stderr.WriteString( fmt.Sprintf("Missing argument.\n\nYou must give one of the 3 available actions :\n -req to manage a request\n -res to manage a response\n -sync to get a synchronisation key\n") )
/* (4) Else -> nothing */
} else {
os.Stderr.WriteString(fmt.Sprintf("Missing argument.\n\nYou must give one of the 3 available actions :\n -req to manage a request\n -res to manage a response\n -sync to get a synchronisation key\n"))
}
executionStop := time.Now().UnixNano()
nsElapsed := float64(executionStop - executionStart)
usElapsed := float64(nsElapsed / 1e3)
msElapsed := float64(usElapsed / 1e3)
sElapsed := float64(msElapsed / 1e3)
nsElapsed := float64(executionStop - executionStart)
usElapsed := float64(nsElapsed / 1e3)
msElapsed := float64(usElapsed / 1e3)
sElapsed := float64(msElapsed / 1e3)
if sElapsed >= 1 { os.Stderr.WriteString( fmt.Sprintf("executed in %.3f s\n", sElapsed) )
} else if msElapsed >= 1 { os.Stderr.WriteString( fmt.Sprintf("executed in %.3f ms\n", msElapsed) )
} else if usElapsed >= 1 { os.Stderr.WriteString( fmt.Sprintf("executed in %.3f us\n", usElapsed) )
} else if nsElapsed >= 1 { os.Stderr.WriteString( fmt.Sprintf("executed in %.3f ns\n", nsElapsed) ) }
if sElapsed >= 1 {
os.Stderr.WriteString(fmt.Sprintf("executed in %.3f s\n", sElapsed))
} else if msElapsed >= 1 {
os.Stderr.WriteString(fmt.Sprintf("executed in %.3f ms\n", msElapsed))
} else if usElapsed >= 1 {
os.Stderr.WriteString(fmt.Sprintf("executed in %.3f us\n", usElapsed))
} else if nsElapsed >= 1 {
os.Stderr.WriteString(fmt.Sprintf("executed in %.3f ns\n", nsElapsed))
}
return
}
func synchronisationRequest(cli *client.T){
func synchronisationRequest(cli *client.T) {
/* (1) Get synchronisation key */
syncKey, err := cli.SynchronisationKey()
if err != nil { fmt.Errorf("[CLIENT_ERROR:syncKey] %s\n", err); return }
if err != nil {
fmt.Errorf("[CLIENT_ERROR:syncKey] %s\n", err)
return
}
/* (2) Print synchronisation key */
os.Stdout.Write(syncKey)
return;
return
}
}

4
internal/keyset/keyset.go
View File

@ -230,7 +230,9 @@ func (s *T) Rescue(lastHash []byte) error {
/* (1) Process hash */
currentHash, err := scha.Hash(s.sec, i)
if err != nil { return err }
if err != nil {
return err
}
/* (2) If not found -> try again */
if string(currentHash) != string(lastHash) {