Golang Channel.GetMember方法代码示例

// HasOpFlag returns whether the user has the given op flag.
// This both checks for the presence of the flag, and, if the flag is default,
// the "on" keyword for default privileges. This function should not be used as
// a direct means of determining a user's ability to do something; instead,
// the appropriate permission check should be used, as this permits module to
// hook the check on other conditions. It should be used IN said permission
// hooks.
//
// If ch is non-nil, this is a channel op flag check and the user's membership
// entry on the channel will be checked. If no such entry exists, the check
// automatically fails. If ch is nil, this is a server op flag check, and the user's own metadata will be checked.
func HasOpFlag(u *core.User, ch *core.Channel, flag string) bool {
	var e core.Extensible
	var defwords []string
	if ch == nil {
		e = u
		defwords = defServerOp
	} else {
		if m := ch.GetMember(u); m != nil {
			e = m
		} else {
			return false
		}
		defwords = defChanOp
	}

	words := strings.Fields(e.Data("op"))
	for _, word := range words {
		if word == flag {
			return true
		}
		if word == "on" {
			for _, defword := range defwords {
				if defword == flag {
					return true
				}
			}
		}
	}

	return false
}

// Voiced users overrride most restrictions on speaking.
func voiceOverride(_ string, source *core.User, target *core.Channel, msg []byte) (int, os.Error) {
	if m := target.GetMember(source); m != nil {
		if m.Data("voiced") != "" {
			return 100, nil
		}
	}
	return 0, nil
}

// If the target is already in a channel, you can't invite them.
// This is deliberately weaker than externalInvite, so external users cannot
// use invites to see whether a user is in the channel.
func stupidInvite(_ string, source, target *core.User, msg []byte) (int, os.Error) {
	var ch *core.Channel
	if ch = core.FindChannel("", string(msg)); ch == nil {
		return -100, os.NewError("No such channel.")
	}
	if m := ch.GetMember(target); m != nil {
		return -99, os.NewError("The target is already in that channel.")
	}
	return 0, nil
}

// Channel operators are immune to being removed by anything below server op
// level aside themselves. They must be deopped first.
func opKickImmune(_ string, source, target *core.User, ch *core.Channel) (int, os.Error) {
	if source == target {
		return 0, nil
	}
	if m := ch.GetMember(target); m != nil {
		if m.Data("op") != "" {
			return -1000000, os.NewError("Target user is an operator, and cannot be kicked without being deopped.")
		}
	}
	return 0, nil
}

// CheckChanViewPerm returns the full permissions value for CheckChanView.
// This is not at present hookable.
func CheckChanViewPerm(pkg string, u *core.User, ch *core.Channel) (int, os.Error) {

	if m := ch.GetMember(u); m != nil {
		return 100, nil
	}

	if ch.Data("hidden") == "" {
		return 1, nil
	}

	return -1, os.NewError("Channel is hidden.")
}

func cmdWho(source interface{}, params [][]byte) {
	c := source.(*Client)
	channame := string(params[0])
	if channame[0] == '#' {
		channame = channame[1:]
	}

	var ch *core.Channel
	if ch = core.FindChannel("", channame); ch == nil {
		c.SendLineTo(nil, "403", "#%s :No such channel.", channame)
		return
	}

	// If the user isn't on the channel, don't let them check unless they
	// can view private channel data.
	if m := ch.GetMember(c.u); m == nil {
		if ok, err := perm.CheckChanViewData(me, c.u, ch, "members"); !ok {
			c.SendLineTo(nil, "482", "#%s :%s", ch.Name(), err)
			return
		}
	}

	it := ch.Users()
	c.WriteBlock(func() []byte {
		if it == nil {
			return nil
		}

		user := it.User()

		var prefixes string
		if user.Data("away") == "" {
			prefixes += "H"
		} else {
			prefixes += "G"
		}
		if user.Data("op") != "" {
			prefixes += "*"
		}
		prefixes += ChanModes.GetPrefixes(it)

		servername := core.Global.Data("name")
		result := fmt.Sprintf(":%s 352 %s #%s %s %s %s %s %s :0 %s\r\n",
			servername, c.u.Nick(), channame, user.GetIdent(),
			user.GetHostname(), servername, user.Nick(),
			prefixes, user.Data("realname"))

		it = it.ChanNext()
		return []byte(result)
	})

	c.SendLineTo(nil, "315", "%s :End of /WHO list.", params[0])
}

func cmdNames(source interface{}, params [][]byte) {
	c := source.(*Client)
	channame := string(params[0])
	if len(channame) > 0 && channame[0] == '#' {
		channame = channame[1:]
	}

	var ch *core.Channel
	if ch = core.FindChannel("", channame); ch == nil {
		c.SendLineTo(nil, "403", "#%s :No such channel.", channame)
		return
	}

	// If the user isn't on the channel, don't let them check unless they
	// can view private channel data.
	// Otherwise, get their prefixes.
	var myprefix string
	if m := ch.GetMember(c.u); m == nil {
		if ok, err := perm.CheckChanViewData(me, c.u, ch, "members"); !ok {
			c.SendLineTo(nil, "482", "#%s :%s", ch.Name(), err)
			return
		}
		myprefix = "="
	} else {
		myprefix = ChanModes.GetPrefixes(m)
	}

	it := ch.Users()
	c.WriteBlock(func() []byte {
		if it == nil {
			return nil
		}

		names := fmt.Sprintf(":%s 353 %s %s #%s :",
			core.Global.Data("name"), c.u.Nick(), myprefix,
			channame)

		for ; it != nil; it = it.ChanNext() {
			name := ChanModes.GetPrefixes(it) + it.User().Nick()
			if len(names)+len(name) > 508 {
				break
			}
			names += " " + name
		}

		names += "\r\n"
		return []byte(names)
	})

	c.SendLineTo(nil, "366", "#%s :End of /NAMES list", channame)
}

// If a user is not in a channel, they don't get to invite users into it.
func externalInvite(_ string, source, target *core.User, msg []byte) (int, os.Error) {
	if source == nil {
		return 0, nil
	}

	var ch *core.Channel
	if ch = core.FindChannel("", string(msg)); ch == nil {
		return -100, os.NewError("No such channel.")
	}
	if m := ch.GetMember(source); m == nil {
		return -100, os.NewError("You are not in that channel.")
	}
	return 0, nil
}

func cmdOpflags(source interface{}, params [][]byte) {
	c := source.(*Client)
	channame := string(params[0])
	if channame[0] == '#' {
		channame = channame[1:]
	}

	var ch *core.Channel
	if ch = core.FindChannel("", channame); ch == nil {
		c.SendLineTo(nil, "403", "#%s :No such channel.", channame)
		return
	}

	// If the user isn't on the channel, don't let them check unless they
	// can view private channel data.
	if m := ch.GetMember(c.u); m == nil {
		if ok, err := perm.CheckChanViewData(me, c.u, ch, "members"); !ok {
			c.SendLineTo(nil, "482", "#%s :%s", ch.Name(), err)
			return
		}
	}

	var target *core.User
	if target = core.GetUserByNick(string(params[1])); target == nil {
		c.SendLineTo(nil, "401", "%s :No such user.", params[1])
		return
	}

	var m *core.Membership
	if m = ch.GetMember(target); m == nil {
		c.SendLineTo(nil, "304", ":OPFLAGS #%s: %s is not in the channel.", ch.Name(), target.Nick())
		return
	}
	if ok, err := perm.CheckMemberViewData(me, c.u, m, "op"); !ok {
		c.SendLineTo(nil, "482", "#%s :%s: %s", ch.Name(), target.Nick(), err)
		return
	}

	var flags string
	if flags = m.Data("op"); flags == "" {
		c.SendLineTo(nil, "304", ":OPFLAGS #%s: %s has no channel op flags.", ch.Name(), target.Nick())
		return
	}

	if flags == "on" {
		flags = perm.DefaultChanOp()
	}
	c.SendLineTo(nil, "304", ":OPFLAGS #%s: %s has channel op flags: %s", ch.Name(), target.Nick(), flags)
}

// If a user is not in the channel, they don't get to message it.
func externalMsg(_ string, source *core.User, target *core.Channel, msg []byte) (int, os.Error) {
	if m := target.GetMember(source); m == nil {
		return -100, os.NewError("You are not in the channel.")
	}
	return 0, nil
}

//.........这里部分代码省略.........
			cparam := params[param]
			param++

			if v, ok := p.extended[char]; ok {
				newchanges := v(adding, e, cparam)
				for _, it := range newchanges {
					if it.Data != "" {
						it.Data += fmt.Sprintf(" setby-%s setat-%d", source.GetSetBy(), time.Seconds())
					}
					changes[it.Name] = it
				}
				continue
			}

			if adding {
				change.Name = v + " " + cparam
				change.Data = fmt.Sprintf("on setby-%s setat-%d", source.GetSetBy(), time.Seconds())
			} else {
				change.Name = v + " " + cparam
			}

			changes[change.Name] = change
			continue
		}

		if v, ok := p.membership[char]; ok {
			var ch *core.Channel
			var ok bool
			if ch, ok = e.(*core.Channel); !ok {
				continue
			}
			if param >= len(params) {
				missing += string(char)
				continue
			}
			par := params[param]
			param++

			if v, ok := p.extended[char]; ok {
				newchanges := v(adding, e, par)
				for _, it := range newchanges {
					if it.Member != nil {
						changes["m"+it.Member.User().ID()+" "+it.Name] = it
					} else {
						changes[it.Name] = it
					}
				}
				continue
			}

			var u *core.User
			var m *core.Membership
			if u = core.GetUser(par); u == nil {
				if u = core.GetUserByNick(par); u == nil {
					continue
				}
			}
			if m = ch.GetMember(u); m == nil {
				continue
			}

			var change core.DataChange
			change.Name = v
			change.Member = m

			if adding {
				change.Data = "on"
			}

			changes["m"+change.Member.User().ID()+" "+change.Name] = change
			continue
		}

		unknown += string(char)
	}

	// Turn the modes into a slice.
	c := make([]core.DataChange, 0, len(changes))
	for _, change := range changes {
		c = append(c, change)
	}

	// Get the error, if we had one.
	var errstring string
	if unknown != "" {
		errstring += "Unknown mode letters: " + unknown
		if missing != "" {
			errstring += "  "
		}
	}
	if missing != "" {
		errstring += "Missing parameters for: " + missing
	}
	var err os.Error
	if errstring != "" {
		err = os.NewError(errstring)
	}

	return c, err
}

// Function handling processing of extended op syntax into metadata.
// It returns the data change object.
func processOp(adding bool, ch *core.Channel, param string) []core.DataChange {
	var change core.DataChange
	change.Name = "op"
	change.Data = perm.DefaultChanOp()

	// Find a colon, indicating extended op syntax.
	var colon, mask int
	colon = strings.IndexRune(param, ':')
	if colon > -1 && len(param) > colon+1 {
		mask = colon + 1
	} else {
		colon = -1
	}

	// Set the member this opping refers to.
	if target := core.GetUserByNick(param[mask:]); target != nil {
		if m := ch.GetMember(target); m != nil {
			change.Member = m
		} else {
			return nil
		}
	} else {
		return nil
	}

	// If a colon exists, treat everything before it as opflags.
	if colon > -1 {
		change.Data = ""
		for _, char := range param[:colon] {
			if v := Flags.Str(char); v != "" {
				if change.Data != "" {
					change.Data += " "
				}
				change.Data += v
			}
		}
	}

	// Get the existing op flags, expanding default ops.
	existingData := change.Member.Data("op")
	words := strings.Fields(existingData)
	var existing string
	for _, word := range words {
		if word == "on" {
			word = perm.DefaultChanOp()
		}

		if existing != "" {
			existing += " "
		}
		existing += word
	}

	if adding {
		// If we're adding the ban, add the new restrictions to the
		// previous restrictions.
		if existing != "" {
			words := strings.Fields(existing)
			remwords := strings.Fields(change.Data)
			for _, flag := range words {
				var found bool
				for _, w := range remwords {
					if w == flag {
						found = true
						break
					}
				}
				if !found {
					if change.Data != "" {
						change.Data += " "
					}
					change.Data += flag
				}
			}
		}
	} else {
		// If we're removing the ban, remove the removed restrictions.
		// Leave restrictions not removed alone.
		// This is "fun". This is also O(n^2).
		var left string
		if existing != "" {
			words := strings.Fields(existing)
			remwords := strings.Fields(change.Data)
			for _, flag := range words {
				var found bool
				for _, w := range remwords {
					if w == flag {
						found = true
						break
					}
				}
				if !found && Flags.Char(flag) != 0 {
					if left != "" {
						left += " "
					}
					left += flag
				}
			}
//.........这里部分代码省略.........