Implement `ipfs bootstrap` command.

This set of commits implements the bootstrap commands,
following from the description in #117

cmd/ipfs/bootstrap.go

+package main
+
+import (
+	"fmt"
+	"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/gonuts/flag"
+	"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/commander"
+	ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
+	config "github.com/jbenet/go-ipfs/config"
+	"strings"
+)
+
+var cmdIpfsBootstrap = &commander.Command{
+	UsageLine: "bootstrap",
+	Short:     "Show a list of bootstrapped addresses.",
+	Long: `ipfs bootstrap - show, or manipulate bootstrap node addresses
+
+SECURITY WARNING:
+
+The bootstrap command manipulates the "bootstrap list", which contains
+the addresses of bootstrap nodes. These are the *trusted peers* from
+which to learn about other peers in the network. Only edit this list
+if you understand the risks of adding or removing nodes from this list.
+
+Running 'ipfs bootstrap' with no arguments will run 'ipfs bootstrap list'.
+
+Commands:
+
+  list               Show the boostrap list.
+  add <address>      Add a node's address to the bootstrap list.
+  remove <address>   Remove an address from the bootstrap list.
+
+`,
+	Run: bootstrapCmd,
+	Subcommands: []*commander.Command{
+		cmdIpfsBootstrapRemove,
+		cmdIpfsBootstrapAdd,
+	},
+	Flag: *flag.NewFlagSet("ipfs-bootstrap", flag.ExitOnError),
+}
+
+var cmdIpfsBootstrapRemove = &commander.Command{
+	UsageLine: "remove",
+	Run:       IpfsBootstrapRemoveCmd,
+	Flag:      *flag.NewFlagSet("ipfs-bootstrap-remove", flag.ExitOnError),
+}
+
+var cmdIpfsBootstrapAdd = &commander.Command{
+	UsageLine: "add",
+	Run:       IpfsBootstrapAddCmd,
+	Flag:      *flag.NewFlagSet("ipfs-bootstrap-add", flag.ExitOnError),
+}
+
+func IpfsBootstrapRemoveCmd(c *commander.Command, inp []string) error {
+
+	if len(inp) == 0 {
+		fmt.Println("No peer specified.")
+		return nil
+	}
+
+	if strings.Contains(inp[0], "/") {
+
+		var pID = inp[0][len(inp[0])-46:]
+		var ip = strings.TrimSuffix(inp[0], pID)
+		maddr, err := ma.NewMultiaddr(strings.TrimSuffix(ip, "/"))
+		var address, _ = maddr.String()
+		if err != nil {
+			return err
+		}
+
+		peer := config.BootstrapPeer{
+			Address: address,
+			PeerID:  pID,
+		}
+
+		configpath, _ := config.Filename("~/.go-ipfs/config")
+		var cfg config.Config
+		readErr := config.ReadConfigFile(configpath, &cfg)
+		if readErr != nil {
+			return readErr
+		}
+
+		i := 0
+		for _, v := range cfg.Bootstrap {
+			if v.PeerID == peer.PeerID && v.Address == peer.Address {
+				continue
+			}
+			cfg.Bootstrap[i] = v
+			i++
+		}
+		cfg.Bootstrap = cfg.Bootstrap[:i]
+
+		writeErr := config.WriteConfigFile(configpath, cfg)
+		if writeErr != nil {
+			return writeErr
+		}
+	}
+
+	if !strings.Contains(inp[0], "/") {
+
+		var peerID = inp[0]
+
+		configpath, _ := config.Filename("~/.go-ipfs/config")
+		var cfg config.Config
+		readErr := config.ReadConfigFile(configpath, &cfg)
+		if readErr != nil {
+			return readErr
+		}
+
+		i := 0
+		for _, v := range cfg.Bootstrap {
+			if v.PeerID == peerID {
+				continue
+			}
+			cfg.Bootstrap[i] = v
+			i++
+		}
+		cfg.Bootstrap = cfg.Bootstrap[:i]
+
+		writeErr := config.WriteConfigFile(configpath, cfg)
+		if writeErr != nil {
+			return writeErr
+		}
+
+	}
+	return nil
+}
+
+func IpfsBootstrapAddCmd(c *commander.Command, inp []string) error {
+
+	if len(inp) == 0 {
+		fmt.Println("No peer specified.")
+		return nil
+	}
+
+	var pID = inp[0][len(inp[0])-46:]
+	var ip = strings.TrimSuffix(inp[0], pID)
+	maddr, err := ma.NewMultiaddr(strings.TrimSuffix(ip, "/"))
+	var address, _ = maddr.String()
+	if err != nil {
+		return err
+	}
+
+	peer := config.BootstrapPeer{
+		Address: address,
+		PeerID:  pID,
+	}
+
+	configpath, _ := config.Filename("~/.go-ipfs/config")
+	var cfg config.Config
+	readErr := config.ReadConfigFile(configpath, &cfg)
+	if readErr != nil {
+		return readErr
+	}
+
+	addedPeer := append(cfg.Bootstrap, &peer)
+	cfg.Bootstrap = addedPeer
+
+	writeErr := config.WriteConfigFile(configpath, cfg)
+	if writeErr != nil {
+		return writeErr
+	}
+	return nil
+	return nil
+}
+func bootstrapCmd(c *commander.Command, inp []string) error {
+
+	configpath, _ := config.Filename("~/.go-ipfs/config")
+	var cfg config.Config
+	config.ReadConfigFile(configpath, &cfg)
+
+	for i := range cfg.Bootstrap {
+		s := []string{cfg.Bootstrap[i].Address, "/", cfg.Bootstrap[i].PeerID, "\n"}
+		fmt.Printf(strings.Join(s, ""))
+	}
+
+	return nil
+
+}

cmd/ipfs/ipfs.go

@@ -51,6 +51,7 @@ Use "ipfs help <command>" for more information about a command.
 		cmdIpfsMount,
 		cmdIpfsInit,
 		cmdIpfsServe,
+		cmdIpfsBootstrap,
 	},
 	Flag: *flag.NewFlagSet("ipfs", flag.ExitOnError),
 }