From 88ba591fc3b1b1057ded3e601f985860bf45e24a Mon Sep 17 00:00:00 2001
From: Christopher Crone <christopher.crone@docker.com>
Date: Fri, 22 May 2020 10:45:01 +0200
Subject: [PATCH] Seed random with nanosecond time

It's possible that users will run commands more than once a second.
Thus, seeding the random number generator with the current time in
seconds could produce results like the same container name in subsequent
commands.

Seeding with the current time in nanoseconds reduces the probability of
this.

Signed-off-by: Christopher Crone <christopher.crone@docker.com>
---
 azure/login/login.go | 5 -----
 cli/main.go          | 4 ++++
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/azure/login/login.go b/azure/login/login.go
index 3c13c543..dd4c63be 100644
--- a/azure/login/login.go
+++ b/azure/login/login.go
@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"log"
-	"math/rand"
 	"net/url"
 	"os/exec"
 	"path/filepath"
@@ -24,10 +23,6 @@ import (
 	"github.com/pkg/errors"
 )
 
-func init() {
-	rand.Seed(time.Now().Unix())
-}
-
 //go login process, derived from code sample provided by MS at https://github.com/devigned/go-az-cli-stuff
 const (
 	authorizeFormat  = "https://login.microsoftonline.com/organizations/oauth2/v2.0/authorize?response_type=code&client_id=%s&redirect_uri=%s&state=%s&prompt=select_account&response_mode=query&scope=%s"
diff --git a/cli/main.go b/cli/main.go
index 110b8029..328a3a5c 100644
--- a/cli/main.go
+++ b/cli/main.go
@@ -30,11 +30,13 @@ package main
 import (
 	"context"
 	"fmt"
+	"math/rand"
 	"os"
 	"os/exec"
 	"os/signal"
 	"path/filepath"
 	"syscall"
+	"time"
 
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
@@ -69,6 +71,8 @@ func init() {
 	if err := os.Setenv("PATH", fmt.Sprintf("%s:%s", os.Getenv("PATH"), path)); err != nil {
 		panic(err)
 	}
+	// Seed random
+	rand.Seed(time.Now().UnixNano())
 }
 
 func isOwnCommand(cmd *cobra.Command) bool {