Example #1
0
// Parses the information in swarm.info file and places each entry into a Peer
// struct and appends that struct to the array of peers
// @param string swarmPath - The path to the swarminfo file
// @return error - An error can be produced when issues arise from trying to access
// the swarm file or from an invalid swarm file type - otherwise error will be nil.
func parseSwarminfo(swarmPath string) error {
	lynkName := getTLynkName(swarmPath)
	lynk := lynxutil.GetLynk(tLynks, lynkName)

	//fmt.Println(lynk)
	lynk.Peers = nil // Resets peers array

	swarmFile, err := os.Open(swarmPath)
	if err != nil {
		return err
	} else if !strings.Contains(swarmPath, "swarm.info") {
		return errors.New("Invalid File Type")
	}

	scanner := bufio.NewScanner(swarmFile)
	tempPeer := lynxutil.Peer{}

	// Scan each line
	for scanner.Scan() {
		line := strings.TrimSpace(scanner.Text()) // Trim helps with errors in \n
		split := strings.Split(line, ":::")

		tempPeer.IP = split[0]
		tempPeer.Port = split[1]
		lynk.Peers = append(lynk.Peers, tempPeer)
	}

	//fmt.Println(lynk.Peers)
	return swarmFile.Close()
}
Example #2
0
// JoinLynk - Function which will allow a user to join an existing link by way of its meta.info file
// @param metaPath string - the path to the meta.info file which will be used to find the
// information about the lynk
func JoinLynk(metaPath string) error {
	metaFile, err := os.Open(metaPath)
	if err != nil {
		return err
	}
	lynkName := ""
	owner := ""
	scanner := bufio.NewScanner(metaFile)
	tempPeer := lynxutil.Peer{}

	// Scan each line
	for scanner.Scan() {

		line := strings.TrimSpace(scanner.Text()) // Trim helps with errors in \n
		split := strings.Split(line, ":::")

		if split[0] == "announce" {
			tempPeer.IP = split[metaValueIndex]
		} else if split[0] == "port" {
			tempPeer.Port = split[metaValueIndex]
		} else if split[0] == "lynkName" {
			lynkName = split[metaValueIndex]
		} else if split[0] == "owner" {
			owner = split[metaValueIndex]
		} else {
			return errors.New("Invalid Meta")
		}

	}

	createJoin(lynkName, metaPath)
	addLynk(lynkName, owner)

	return UpdateLynk(lynkName) // Gets all of the files for the lynk over the network
}
Example #3
0
// CreateSwarm - Creates a new swarm.info upon clicking of create button in gui
// @param string name - the name of the lynk
func CreateSwarm(name string) {
	p1 := lynxutil.Peer{IP: "", Port: "8080"}

	currentuser, err := user.Current()
	trackerDir := currentuser.HomeDir + "/Lynx/" + name + "/" + name + "_Tracker"
	os.Mkdir(trackerDir, 0755)

	_, err = os.Create(trackerDir + "/swarm.info")
	if err != nil {
		fmt.Println(err)
	}

	p1.IP = lynxutil.GetIP()
	addToSwarminfo(p1, trackerDir+"/swarm.info")

	lynxutil.FileCopy(currentuser.HomeDir+"/Lynx/"+name+"/meta.info", trackerDir+"/meta.info")
}