From 257ec355c91a21ce40d9ebbe47b51afff58424f5 Mon Sep 17 00:00:00 2001
From: xdrm-brackets <doowap31@gmail.com>
Date: Tue, 24 Apr 2018 23:42:56 +0200
Subject: [PATCH] [cmd.server] created and working (more tests to perform)

---
 src/git.xdrm.io/schastsp/cmd/server/server.go | 105 ++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 src/git.xdrm.io/schastsp/cmd/server/server.go

diff --git a/src/git.xdrm.io/schastsp/cmd/server/server.go b/src/git.xdrm.io/schastsp/cmd/server/server.go
new file mode 100644
index 0000000..211d7ea
--- /dev/null
+++ b/src/git.xdrm.io/schastsp/cmd/server/server.go
@@ -0,0 +1,105 @@
+package main
+
+import (
+	"git.xdrm.io/schastsp/pkg/scha"
+	"time"
+	"os"
+	"flag"
+	"fmt"
+	"git.xdrm.io/schastsp/context"
+	"git.xdrm.io/schastsp/server"
+)
+
+func main(){
+
+	executionStart := time.Now().UnixNano()
+
+	/* (1) Flag management (cli arguments)
+	---------------------------------------------------------*/
+	/* (1) Secret folder */
+	serverConfigPath := flag.String("file", "/tmp/schastsp_hash", "Configuration file, it will contain sensitive data (key), make sure to control it properly. (default: /tmp/schastsp_hash)")
+
+	/* (2) Context window size */
+	winSize := flag.Uint("win", 2000, "Time window value in ms. (default: 2000)")
+
+	/* (3) Context minimum depth value */
+	minDepth := flag.Uint("min", 0x0f0, "Minimum depth value. (default: 240)")
+
+	/* (4) Context maximum depth value */
+	maxDepth := flag.Uint("max", 0xfff, "Maximum depth value. (default: 4095)")
+
+	/* (5) Context depth threshold */
+	thrDepth := flag.Uint("thr", 0x00a, "Depth threshold protecting minimum depth to be reached. (default: 10)")
+
+	/* (6) Synchronisation request (special order) */
+	syncRequest := flag.Bool("sync", false, "If set, proceeds a synchronisation from standard input (synchronisation key).")
+
+	/* (7) 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("[SERVER_ERROR:context] %s\n", err) ); return }
+
+	/* (2) Create server */
+	ser, err := server.New(ctx, *serverConfigPath)
+	if err != nil { os.Stderr.WriteString( fmt.Sprintf("[SERVER_ERROR:server] %s\n", err) ); return }
+
+
+
+	/* (3) Dispatch execution
+	---------------------------------------------------------*/
+	/* (1) If synchronisation request */
+	if *syncRequest {
+		synchronisationCommit(ser);
+
+	/* (2) If request handling */
+	} else {
+
+		err = ser.HandleRequest(os.Stdin, os.Stdout)
+		if err != nil { os.Stderr.WriteString( fmt.Sprintf("[SERVER_ERROR:request] %s\n", err) ) }
+
+	}
+
+
+
+
+
+	executionStop := time.Now().UnixNano()
+	nsElapsed     := float64(executionStop - executionStart)
+	usElapsed     := float64(nsElapsed / 1e3)
+	msElapsed     := float64(usElapsed / 1e3)
+	sElapsed      := float64(msElapsed / 1e3)
+
+	if sElapsed >= 1 {         fmt.Errorf("executed in %.3f s\n", sElapsed)
+	} else if msElapsed >= 1 { fmt.Errorf("executed in %.3f ms\n", msElapsed)
+	} else if usElapsed >= 1 { fmt.Errorf("executed in %.3f us\n", usElapsed)
+	} else if nsElapsed >= 1 { fmt.Errorf("executed in %.3f ns\n", nsElapsed) }
+
+	return
+}
+
+
+
+
+func synchronisationCommit(ser *server.T){
+
+	/* (1) Try to read key from standard input */
+	syncKey := make([]byte, scha.HSIZE)
+	read, err := os.Stdin.Read(syncKey)
+	if err != nil { os.Stderr.WriteString( fmt.Sprintf("[SERVER_ERROR:syncKey] %s\n", err) ); return }
+	if uint16(read) != scha.HSIZE { os.Stderr.WriteString( fmt.Sprintf("[SERVER_ERROR:syncKey] Cannot read proper key size\n") ); return }
+
+	/* (2) Store synchronisation key */
+	err = ser.SynchronisationKey(syncKey)
+	if err != nil { os.Stderr.WriteString( fmt.Sprintf("[SERVER_ERROR:syncKey] %s\n", err) ); return }
+
+	/* (3) Debug */
+	os.Stdout.WriteString("Synchronisation key successfully written\n")
+
+	return;
+
+}
\ No newline at end of file