func main() {
stdext.SetPreFlagsUsageMessage(desc, "/path/to/executables/dir")
if err := stdext.ParseFlagsExpectingNArgs(1); err != nil {
stdext.Exit(err)
}
execPaths, err := findExecPaths(flag.Arg(0))
if err != nil {
stdext.Exit(err)
}
setupHandlers(execPaths)
stdext.Exit(http.ListenAndServe(fmt.Sprintf(":%d", *port), nil))
}
func setup() (*config, error) {
stdext.SetPreFlagsUsageMessage(
versionLabel + " :: https://github.com/frou/yt2pod")
flag.Parse()
if *showVersion {
fmt.Fprintln(os.Stderr, versionLabel)
os.Exit(0)
}
// Setup log destination & format.
var (
w io.Writer
flags int
err error
)
if *useSyslog {
sender := filepath.Base(os.Args[0])
severity := syslog.LOG_INFO
if runtime.GOOS == "darwin" {
// OS X processes swallow LOG_INFO and LOG_DEBUG msgs by default.
severity = syslog.LOG_NOTICE
}
w, err = syslog.New(syslog.LOG_DAEMON|severity, sender)
if err != nil {
return nil, err
}
//flags = log.Lshortfile
} else {
w = os.Stderr
flags = log.Ldate | log.Ltime //| log.Lshortfile
}
log.SetOutput(w)
log.SetFlags(flags)
log.Print(versionLabel)
// Load config from disk.
cfg, err := loadConfig(*configPath)
if err != nil {
return nil, errors.New("config: " + err.Error())
}
log.Print("Config successfully loaded from ", *configPath)
// Up front, check that the youtube downloading command is available.
output, err := exec.Command(downloadCmdName, "--version").Output()
if err != nil {
return nil, errors.New(downloadCmdName + " command is not available")
}
log.Printf("Version of %s is %s", downloadCmdName, output)
// Up front, check that a GET to a http_s_ server works (which needs CA
// certs to be present and correct in the OS)
secureResp, err := http.Get("https://www.googleapis.com/")
if err != nil {
if urlErr, ok := err.(*url.Error); ok {
if sysRootsErr, ok := urlErr.Err.(x509.SystemRootsError); ok {
return nil, sysRootsErr
}
}
log.Print(err)
} else {
secureResp.Body.Close()
}
// Create the data directory.
err = os.Mkdir(*dataPath, stdext.OwnerWritableDir)
if err != nil && !os.IsExist(err) {
return nil, err
}
// Change into it (don't want to expose our config file when webserving).
if err := os.Chdir(*dataPath); err != nil {
return nil, err
}
// Create its subdirectories.
for _, name := range []string{dataSubdirMetadata, dataSubdirEpisodes} {
err := os.Mkdir(name, stdext.OwnerWritableDir)
if err != nil && !os.IsExist(err) {
return nil, err
}
}
return cfg, nil
}