/
main.go
281 lines (249 loc) · 7.02 KB
/
main.go
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package main
import (
"bytes"
"encoding/json"
"fmt"
"log"
"net/url"
"os"
"sort"
"strings"
"sync"
"text/tabwriter"
"text/template"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/iam"
"github.com/aws/aws-sdk-go/service/sts"
"github.com/jawher/mow.cli"
homedir "github.com/mitchellh/go-homedir"
"github.com/vaughan0/go-ini"
)
func main() {
desc := `AWS access key manager
Help you to export environment variables and unset them easily.
e.g)
To export AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY for default profile
$ eval $(envaws env default)
To unset them
$ eval $(envaws unset)`
app := cli.App("envaws", desc)
//app.Version = "0.1.0dev"
app.Command("ls", "List available profiles in ~/.aws/credentials", func(c *cli.Cmd) {
f := c.Bool(cli.BoolOpt{Name: "full f", Desc: "Print AccountId, ARN for each profile", Value: false})
c.Spec = "[-f]"
c.Action = func() {
listProfiles(*f)
}
})
app.Command("env", "Print keys as environtment variables for profile", func(c *cli.Cmd) {
profile := c.String(cli.StringArg{Name: "PROFILE", Desc: "Profile name"})
c.Action = func() {
sec := loadParams(*profile)
formatEnv(sec, "TBD")
}
})
app.Command("unset", "Print commands to unset environtment variables for AWS_*", func(c *cli.Cmd) {
c.Action = func() {
unset()
}
})
app.Command("tf", "Print keys as terraform variable definition for profile", func(c *cli.Cmd) {
var (
profile = c.String(cli.StringArg{Name: "PROFILE", Desc: "Profile name"})
format = c.String(cli.StringOpt{Name: "format f", Desc: "option,env,var,export", Value: "env"})
)
c.Spec = "PROFILE"
c.Action = func() {
sec := loadParams(*profile)
formatTf(sec, *format)
}
})
app.Command("role", "", func(c *cli.Cmd) {
c.Command("ls", "", func(c *cli.Cmd) {
f := c.Bool(cli.BoolOpt{Name: "full f", Desc: "Print RoleId, ARN for each profile", Value: false})
c.Action = func() {
svc := iam.New(session.New(), &aws.Config{})
res, err := svc.ListRoles(nil)
if err != nil {
log.Fatalln(err)
}
w := new(tabwriter.Writer)
w.Init(os.Stdout, 0, 8, 0, '\t', 0)
for _, r := range res.Roles {
if *f {
fmt.Fprintf(w, "%v\t%v\t%v\n", *r.RoleName, *r.RoleId, *r.Arn)
} else {
fmt.Fprintf(w, "%v\n", *r.RoleName)
}
}
w.Flush()
}
})
c.Command("get", "", func(c *cli.Cmd) {
rolename := c.String(cli.StringArg{Name: "ROLE_NAME", Desc: "Role name"})
c.Action = func() {
svc := iam.New(session.New(), &aws.Config{})
res, err := svc.GetRole(&iam.GetRoleInput{RoleName: rolename})
if err != nil {
log.Fatalln(err)
}
b, _ := json.MarshalIndent(res, "", " ")
fmt.Println(string(b))
d, _ := url.QueryUnescape(*res.Role.AssumeRolePolicyDocument)
fmt.Println(d)
}
})
})
app.Run(os.Args)
}
func loadParams(profile string) ini.Section {
sec := loadSection(profile)
cnf := load("~/.aws/config", "profile "+profile, false)
for k, v := range cnf {
sec[k] = v
}
return sec
}
const ACCESS_KEY_ID = "aws_access_key_id"
const SECRET_ACCESS_KEY = "aws_secret_access_key"
const DEFAULT_REGION = "region"
func loadInifile(path string) ini.File {
path, err := homedir.Expand(path)
if err != nil {
log.Fatalf("doesn't exist: %v\n", err)
}
if file, err := os.Open(path); err != nil {
log.Fatalf("failed to open: %v\n", err)
} else {
inifile, err := ini.Load(file)
if err != nil {
log.Fatalf("%v\n", err)
}
return inifile
}
// Never reach
return nil
}
func loadSection(profile string) ini.Section {
return load("~/.aws/credentials", profile, true)
}
func load(path, profile string, check bool) ini.Section {
inifile := loadInifile(path)
for k, _ := range inifile {
if k == profile {
sec := inifile[k]
if check {
if sec[ACCESS_KEY_ID] == "" {
log.Fatalf("aws_access_key_id is empty")
}
if sec[SECRET_ACCESS_KEY] == "" {
log.Fatalf("aws_secret_access_key is empty")
}
}
return sec
}
}
if check {
log.Fatalf("missing %v in %v\n", profile, path)
}
return map[string]string{}
}
const tf_env = `TF_VAR_aws_access_key="{{.aws_access_key_id}}" TF_VAR_aws_secret_key="{{.aws_secret_access_key}}"{{if .aws_region}} TV_VAR_region="{{.aws_region}}"{{end}}`
const tf_var = `
aws_access_key = "{{.aws_access_key_id}}"
aws_secret_key = "{{.aws_secret_access_key}}"
{{if .aws_region}}aws_region = "{{.aws_region}}"{{end}}
`
const tf_option = `-var aws_access_key="{{.aws_access_key_id}}" -var aws_secret_key="{{.aws_secret_access_key}}"{{if .aws_region}} -var region="{{.aws_region}}"{{end}}`
const tf_export = `
export TF_VAR_aws_access_key="{{.aws_access_key_id}}"
export TF_VAR_aws_secret_key="{{.aws_secret_access_key}}"
{{if .aws_region}}export TF_VAR_region="{{.aws_region}}"{{end}}`
func formatTf(sec ini.Section, format string) {
templ := (map[string]string{
"env": tf_env,
"var": tf_var,
"option": tf_option,
"export": tf_export,
})[format]
if templ == "" {
log.Fatalf("not supported format: %v", format)
}
formatTempl(sec, templ)
}
func formatEnv(sec ini.Section, format string) {
templ := `
export AWS_ACCESS_KEY_ID="{{.aws_access_key_id}}"
export AWS_SECRET_ACCESS_KEY="{{.aws_secret_access_key}}"
{{if .aws_region}}export AWS_DEFAULT_REGION="{{.aws_region}}"{{end}}
`
formatTempl(sec, templ)
}
func formatTempl(sec ini.Section, templ string) {
vals := map[string]interface{}{
"aws_access_key_id": sec[ACCESS_KEY_ID],
"aws_secret_access_key": sec[SECRET_ACCESS_KEY],
"aws_region": sec[DEFAULT_REGION],
}
t, _ := template.New("tf").Parse(templ)
s := bytes.NewBuffer([]byte{})
t.Execute(s, vals)
fmt.Println(strings.TrimSpace(s.String()))
}
func unset() {
templ := `
unset AWS_ACCESS_KEY_ID
unset AWS_SECRET_ACCESS_KEY
unset AWS_SECURITY_TOKEN
unset AWS_DEFAULT_PROFILE
`
//unset AWS_DEFAULT_REGION
//unset AWS_DEFAULT_OUTPUT
//unset AWS_CONFIG_FILE
fmt.Println(strings.TrimSpace(templ))
}
type out struct {
name string
out *sts.GetCallerIdentityOutput
err error
}
func listProfiles(full bool) {
f := loadInifile("~/.aws/credentials")
keys := make([]string, 0)
for p, _ := range f {
keys = append(keys, p)
}
sort.Strings(keys)
if !full {
for _, k := range keys {
fmt.Println(k)
}
return
}
slots := make([]*out, len(keys))
var wg sync.WaitGroup
wg.Add(len(keys))
for i, k := range keys {
go func(i int, name string) {
cred := credentials.NewSharedCredentials("", name)
svc := sts.New(session.New(), &aws.Config{Credentials: cred})
res, err := svc.GetCallerIdentity(&sts.GetCallerIdentityInput{})
slots[i] = &out{name: name, out: res, err: err}
wg.Done()
}(i, k)
}
wg.Wait()
w := new(tabwriter.Writer)
w.Init(os.Stdout, 0, 8, 0, '\t', 0)
for _, r := range slots {
if r.err != nil {
fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\n", r.name, "", "", "", strings.Replace(r.err.Error(), "\n", " ", -1))
} else {
res := r.out
fmt.Fprintf(w, "%v\t%v\t%v\t%v\n", r.name, *res.Account, *res.UserId, *res.Arn)
}
}
w.Flush()
}