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|
package main
import (
"encoding/json"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"net/http"
"os"
"time"
)
/* TODO move structs to pkg/config/motd module, import from there */
const defaultFile = "motd-example.json"
const OK = "✓"
const WRONG = "☓"
const TimeString = "02 Jan 06 15:04 -0700" // RFC822 with numeric zone
type Messages struct {
Messages []Message `json:"motd"`
}
func (m *Messages) Length() int {
return len(m.Messages)
}
type Message struct {
Begin string `json:"begin"`
End string `json:"end"`
Type string `json:"type"`
Platform string `json:"platform"`
Urgency string `json:"urgency"`
Text []LocalizedText `json:"text"`
}
func (m *Message) IsValid() bool {
valid := (m.IsValidBegin() && m.IsValidEnd() &&
m.IsValidType() && m.IsValidPlatform() && m.IsValidUrgency() &&
m.HasLocalizedText())
return valid
}
func (m *Message) IsValidBegin() bool {
_, err := time.Parse(TimeString, m.Begin)
if err != nil {
log.Println(err)
return false
}
return true
}
func (m *Message) IsValidEnd() bool {
endTime, err := time.Parse(TimeString, m.End)
if err != nil {
log.Println(err)
return false
}
beginTime, err := time.Parse(TimeString, m.Begin)
if err != nil {
log.Println(err)
return false
}
if !beginTime.Before(endTime) {
log.Println("begin ts should be before end")
return false
}
return true
}
func (m *Message) IsValidType() bool {
switch m.Type {
case "once", "daily":
return true
default:
return false
}
}
func (m *Message) IsValidPlatform() bool {
switch m.Platform {
case "windows", "linux", "osx", "all":
return true
default:
return false
}
}
func (m *Message) IsValidUrgency() bool {
switch m.Urgency {
case "normal", "critical":
return true
default:
return false
}
}
func (m *Message) HasLocalizedText() bool {
return len(m.Text) > 0
}
type LocalizedText struct {
Lang string `json:"lang"`
Str string `json:"str"`
}
func main() {
file := flag.String("file", "", "file to validate")
url := flag.String("url", "", "url to validate")
flag.Parse()
f := *file
u := *url
if u != "" {
fmt.Println("url:", u)
f = downloadToTempFile(u)
} else {
if f == "" {
f = defaultFile
}
fmt.Println("file:", f)
}
m, err := parseFile(f)
if err != nil {
panic(err)
}
fmt.Printf("count: %v\n", m.Length())
fmt.Println()
for i, msg := range m.Messages {
fmt.Printf("Message %d %v\n-----------\n", i+1, mark(msg.IsValid()))
fmt.Printf("Type: %s %v\n", msg.Type, mark(msg.IsValidType()))
fmt.Printf("Platform: %s %v\n", msg.Platform, mark(msg.IsValidPlatform()))
fmt.Printf("Urgency: %s %v\n", msg.Urgency, mark(msg.IsValidUrgency()))
fmt.Printf("Languages: %d %v\n", len(msg.Text), mark(msg.HasLocalizedText()))
if !msg.IsValid() {
os.Exit(1)
}
}
}
func downloadToTempFile(url string) string {
resp, err := http.Get(url)
if err != nil {
panic(err)
}
defer resp.Body.Close()
out, err := ioutil.TempFile("/tmp/", "motd-linter")
if err != nil {
panic(err)
}
defer out.Close()
_, _ = io.Copy(out, resp.Body)
fmt.Println("File downloaded to", out.Name())
return out.Name()
}
func parseFile(f string) (Messages, error) {
jsonFile, err := os.Open(f)
if err != nil {
panic(err)
}
defer jsonFile.Close()
byteVal, err := ioutil.ReadAll(jsonFile)
if err != nil {
panic(err)
}
return parseJsonStr(byteVal)
}
func parseJsonStr(b []byte) (Messages, error) {
var m Messages
json.Unmarshal(b, &m)
return m, nil
}
func mark(val bool) string {
if val {
return OK
} else {
return WRONG
}
}
|
