From 7543d7058f9c8d0fcf28034e578781d95eca9ba7 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Wed, 22 Nov 2017 19:05:36 +1300
Subject: [PATCH 01/32] move all nmdc-specific content to a separate
 NmdcProtocol class

--HG--
branch : adc
---
 HubAddress.go    |  15 +-
 HubConnection.go | 269 ++----------------------------
 NmdcProtocol.go  | 413 +++++++++++++++++++++++++++++++++++++++++++++++
 Protocol.go      |  17 ++
 UserInfo.go      | 105 ------------
 libnmdc.go       |  59 ++-----
 6 files changed, 471 insertions(+), 407 deletions(-)
 create mode 100644 NmdcProtocol.go
 create mode 100644 Protocol.go

diff --git a/HubAddress.go b/HubAddress.go
index b282f43..12d5c61 100644
--- a/HubAddress.go
+++ b/HubAddress.go
@@ -27,9 +27,22 @@ func (this *HubAddress) parse() url.URL {
 func (this *HubAddress) IsSecure() bool {
 	parsed := this.parse()
 
-	return parsed.Scheme == "nmdcs" || parsed.Scheme == "dchubs"
+	return parsed.Scheme == "nmdcs" || parsed.Scheme == "dchubs" || parsed.Scheme == "adcs"
 }
 
 func (this *HubAddress) GetHostOnly() string {
 	return this.parse().Host
 }
+
+func (this *HubAddress) GetProtocol() HubProtocol {
+	parsed := this.parse()
+
+	switch parsed.Scheme {
+	case "nmdc", "dchub", "nmdcs", "dchubs":
+		return HubProtocolNmdc
+	case "adc", "adcs":
+		return HubProtocolAdc
+	default:
+		return HubProtocolAutodetect
+	}
+}
diff --git a/HubConnection.go b/HubConnection.go
index 2137666..6ee8597 100644
--- a/HubConnection.go
+++ b/HubConnection.go
@@ -4,8 +4,7 @@ import (
 	"crypto/tls"
 	"fmt"
 	"net"
-	"strconv"
-	"strings"
+	"regexp"
 	"sync"
 	"time"
 )
@@ -20,6 +19,8 @@ type HubConnection struct {
 	users    map[string]UserInfo
 	userLock sync.RWMutex
 
+	proto Protocol
+
 	// Streamed events
 	processEvent func(HubEvent)
 	OnEvent      chan HubEvent
@@ -27,11 +28,8 @@ type HubConnection struct {
 	// Private state
 	conn             net.Conn // this is an interface
 	connValid        bool
-	sentOurHello     bool
 	autoReconnect    bool
 	lastDataRecieved time.Time
-
-	supports map[string]struct{}
 }
 
 // Thread-safe user accessor.
@@ -43,15 +41,11 @@ func (this *HubConnection) Users(cb func(*map[string]UserInfo) error) error {
 }
 
 func (this *HubConnection) SayPublic(message string) {
-	this.SayRaw("<" + this.Hco.Self.Nick + "> " + Escape(message) + "|")
+	this.proto.SayPublic(message)
 }
 
 func (this *HubConnection) SayPrivate(recipient string, message string) {
-	this.SayRaw("$To: " + recipient + " From: " + this.Hco.Self.Nick + " $<" + this.Hco.Self.Nick + "> " + Escape(message) + "|")
-}
-
-func (this *HubConnection) SayInfo() {
-	this.SayRaw(this.Hco.Self.toMyINFO() + "|")
+	this.proto.SayPrivate(recipient, message)
 }
 
 func (this *HubConnection) UserExists(nick string) bool {
@@ -99,250 +93,12 @@ func (this *HubConnection) userJoined_Full(uinf *UserInfo) {
 // Note that protocol messages are transmitted on the caller thread, not from
 // any internal libnmdc thread.
 func (this *HubConnection) SayRaw(protocolCommand string) error {
-	if this.connValid {
-		_, err := this.conn.Write([]byte(protocolCommand))
-		return err
-	} else {
+	if !this.connValid {
 		return ErrNotConnected
 	}
-}
 
-func (this *HubConnection) processProtocolMessage(message string) {
-
-	// Zero-length protocol message
-	// ````````````````````````````
-	if len(message) == 0 {
-		return
-	}
-
-	// Public chat
-	// ```````````
-	if rx_publicChat.MatchString(message) {
-		pubchat_parts := rx_publicChat.FindStringSubmatch(message)
-		this.processEvent(HubEvent{EventType: EVENT_PUBLIC, Nick: pubchat_parts[1], Message: Unescape(pubchat_parts[2])})
-		return
-	}
-
-	// System messages
-	// ```````````````
-	if message[0] != '$' {
-		this.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_HUB, Nick: this.HubName, Message: Unescape(message)})
-		return
-	}
-
-	// Protocol messages
-	// `````````````````
-
-	commandParts := strings.SplitN(message, " ", 2)
-	switch commandParts[0] {
-
-	case "$Lock":
-		this.SayRaw("$Supports NoHello NoGetINFO UserCommand UserIP2 QuickList ChatOnly|" +
-			"$Key " + unlock([]byte(commandParts[1])) + "|")
-		this.sentOurHello = false
-
-	case "$Hello":
-		if commandParts[1] == this.Hco.Self.Nick && !this.sentOurHello {
-			this.SayRaw("$Version 1,0091|")
-			this.SayRaw("$GetNickList|")
-			this.SayInfo()
-			this.sentOurHello = true
-
-		} else {
-			this.userJoined_NameOnly(commandParts[1])
-
-		}
-
-	case "$HubName":
-		this.HubName = commandParts[1]
-		this.processEvent(HubEvent{EventType: EVENT_HUBNAME_CHANGED, Nick: commandParts[1]})
-
-	case "$ValidateDenide": // sic
-		if len(this.Hco.NickPassword) > 0 {
-			this.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN, Message: "Incorrect password."})
-		} else {
-			this.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN, Message: "Nick already in use."})
-		}
-
-	case "$HubIsFull":
-		this.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN, Message: "Hub is full."})
-
-	case "$BadPass":
-		this.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN, Message: "Incorrect password."})
-
-	case "$GetPass":
-		if len(this.Hco.NickPassword) == 0 {
-			// We've got a problem. MyPass with no arguments is a syntax error with no message = instant close
-			// Just drop the connection
-			this.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN, Message: "This account is passworded."})
-			this.Disconnect()
-		} else {
-			this.SayRaw("$MyPass " + Escape(this.Hco.NickPassword) + "|")
-		}
-
-	case "$Quit":
-		this.userLock.Lock()
-		delete(this.users, commandParts[1])
-		this.userLock.Unlock() // Don't lock over a processEvent boundary
-
-		this.processEvent(HubEvent{EventType: EVENT_USER_PART, Nick: commandParts[1]})
-
-	case "$MyINFO":
-		u := UserInfo{}
-		err := u.fromMyINFO(commandParts[1])
-		if err != nil {
-			this.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: err.Error()})
-			return
-		}
-
-		this.userJoined_Full(&u)
-
-	case "$NickList":
-		nicklist := strings.Split(commandParts[1], "$$")
-		for _, nick := range nicklist {
-			if len(nick) > 0 {
-				this.userJoined_NameOnly(nick)
-			}
-		}
-
-	case "$OpList":
-		oplist := strings.Split(commandParts[1], "$$")
-		opmap := map[string]struct{}{}
-
-		// Organise/sort the list, and ensure we're not meeting an operator for
-		//  the first time
-		for _, nick := range oplist {
-			if len(nick) > 0 {
-				opmap[nick] = struct{}{}
-				this.userJoined_NameOnly(nick) // assert existence; noop otherwise
-			}
-		}
-
-		// Mark all mentioned nicks as being operators, and all unmentioned nicks
-		//  as being /not/ an operator. (second pass minimises RW mutex use)
-		func() {
-			this.userLock.Lock()
-			defer this.userLock.Unlock()
-
-			for nick, userinfo := range this.users {
-				_, isop := opmap[nick]
-
-				userinfo.IsOperator = isop
-				this.users[nick] = userinfo
-			}
-		}()
-
-	case "$To:":
-		valid := false
-		if rx_incomingTo.MatchString(commandParts[1]) {
-			txparts := rx_incomingTo.FindStringSubmatch(commandParts[1])
-			if txparts[1] == this.Hco.Self.Nick && txparts[2] == txparts[3] {
-				this.processEvent(HubEvent{EventType: EVENT_PRIVATE, Nick: txparts[2], Message: Unescape(txparts[4])})
-				valid = true
-			}
-		}
-
-		if !valid {
-			this.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Malformed private message '" + commandParts[1] + "'"})
-		}
-
-	case "$UserIP":
-		this.userLock.Lock()
-
-		pairs := strings.Split(commandParts[1], "$$")
-		notifyOfUpdate := make([]string, 0, len(pairs))
-
-	nextIPPair:
-		for _, pair := range pairs {
-			parts := strings.SplitN(pair, " ", 2)
-			if len(parts) != 2 {
-				// ????
-				continue nextIPPair
-			}
-
-			ip2nick := parts[0]
-			ip2addr := parts[1]
-
-			uinfo, ok := this.users[ip2nick]
-			if !ok {
-				this.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Recieved IP '" + ip2addr + "' for unknown user '" + ip2nick + "'"})
-				continue nextIPPair
-			}
-
-			if uinfo.IPAddress != ip2addr {
-				uinfo.IPAddress = ip2addr
-				notifyOfUpdate = append(notifyOfUpdate, ip2nick)
-				this.users[ip2nick] = uinfo
-			}
-		}
-
-		this.userLock.Unlock()
-
-		for _, nick := range notifyOfUpdate {
-			this.processEvent(HubEvent{EventType: EVENT_USER_UPDATED_INFO, Nick: nick})
-		}
-
-	case "$ForceMove":
-		this.Hco.Address = HubAddress(commandParts[1])
-		this.conn.Close() // we'll reconnect onto the new address
-
-	case "$UserCommand":
-		// $UserCommand 1 1 Group chat\New group chat$<%[mynick]> !groupchat_new&#124;|
-		if rx_userCommand.MatchString(commandParts[1]) {
-			usc := rx_userCommand.FindStringSubmatch(commandParts[1])
-
-			typeInt, _ := strconv.Atoi(usc[1])
-			contextInt, _ := strconv.Atoi(usc[2])
-
-			uscStruct := UserCommand{
-				Type:    UserCommandType(typeInt),
-				Context: UserCommandContext(contextInt),
-				Message: usc[3],
-				Command: Unescape(usc[4]),
-			}
-
-			this.processEvent(HubEvent{EventType: EVENT_USERCOMMAND, UserCommand: &uscStruct})
-
-		} else {
-			this.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Malformed usercommand '" + commandParts[1] + "'"})
-		}
-
-	case "$Supports":
-		this.supports = make(map[string]struct{})
-		for _, s := range strings.Split(commandParts[1], " ") {
-			this.supports[s] = struct{}{}
-		}
-
-		if !this.sentOurHello {
-
-			// Need to log in.
-			// If the hub supports QuickList, we can skip one network roundtrip
-			if _, ok := this.supports["QuickList"]; ok {
-				this.SayInfo()
-				this.SayRaw("$GetNickList|")
-			} else {
-				this.SayRaw("$ValidateNick " + Escape(this.Hco.Self.Nick) + "|")
-			}
-
-			// This also counts as the end of the handshake from our POV. Consider
-			// ourselves logged in
-			this.sentOurHello = true
-			if this.State != CONNECTIONSTATE_CONNECTED {
-				this.processEvent(HubEvent{EventType: EVENT_CONNECTION_STATE_CHANGED, StateChange: CONNECTIONSTATE_CONNECTED})
-				this.State = CONNECTIONSTATE_CONNECTED
-			}
-
-		}
-
-	// IGNORABLE COMMANDS
-	case "$HubTopic":
-	case "$Search":
-	case "$ConnectToMe":
-
-	default:
-		this.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Unhandled protocol command '" + commandParts[0] + "'"})
-
-	}
+	_, err := this.conn.Write([]byte(protocolCommand))
+	return err
 }
 
 func (this *HubConnection) Disconnect() {
@@ -396,7 +152,7 @@ func (this *HubConnection) worker() {
 				err = nil
 
 				// Send KA packet
-				_, err = this.conn.Write([]byte("|"))
+				err = this.proto.SayKeepalive()
 			}
 
 			if nbytes > 0 {
@@ -405,14 +161,17 @@ func (this *HubConnection) worker() {
 			}
 		}
 
+		rxSeparator := regexp.QuoteMeta(this.proto.ProtoMessageSeparator())
+		rxProtocolMessage := regexp.MustCompile(`(?ms)\A[^` + rxSeparator + `]*` + rxSeparator)
+
 		// Attempt to parse a message block
 		for len(fullBuffer) > 0 {
 			for len(fullBuffer) > 0 && fullBuffer[0] == '|' {
 				fullBuffer = fullBuffer[1:]
 			}
-			protocolMessage := rx_protocolMessage.FindString(fullBuffer)
+			protocolMessage := rxProtocolMessage.FindString(fullBuffer)
 			if len(protocolMessage) > 0 {
-				this.processProtocolMessage(protocolMessage[:len(protocolMessage)-1])
+				this.proto.ProcessCommand(protocolMessage[:len(protocolMessage)-1])
 				fullBuffer = fullBuffer[len(protocolMessage):]
 			} else {
 				break
diff --git a/NmdcProtocol.go b/NmdcProtocol.go
new file mode 100644
index 0000000..1ac3fd1
--- /dev/null
+++ b/NmdcProtocol.go
@@ -0,0 +1,413 @@
+package libnmdc
+
+import (
+	"errors"
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+type NmdcProtocol struct {
+	hc           *HubConnection
+	sentOurHello bool
+	supports     map[string]struct{}
+
+	rxPublicChat  *regexp.Regexp
+	rxIncomingTo  *regexp.Regexp
+	rxUserCommand *regexp.Regexp
+	rxMyInfo      *regexp.Regexp
+	rxMyInfoNoTag *regexp.Regexp
+}
+
+var _ Protocol = &NmdcProtocol{} // Assert that we implement the interface
+
+func NewNmdcProtocol(hc *HubConnection) *NmdcProtocol {
+	proto := NmdcProtocol{}
+	proto.hc = hc
+
+	// With the `m` flag, use \A instead of ^ to anchor to start
+	// This fixes accidentally finding a better match in the middle of a multi-line message
+
+	proto.rxPublicChat = regexp.MustCompile(`(?ms)\A<([^>]*)> (.*)$`)
+	proto.rxIncomingTo = regexp.MustCompile(`(?ms)\A([^ ]+) From: ([^ ]+) \$<([^>]*)> (.*)`)
+	proto.rxUserCommand = regexp.MustCompile(`(?ms)\A(\d+) (\d+)\s?([^\$]*)\$?(.*)`)
+
+	// Format: $ALL <nick> <description>$ $<connection><flag>$<e-mail>$<sharesize>$
+
+	HEAD := `(?ms)^\$ALL ([^ ]+) `
+	FOOT := `\$.\$([^$]+)\$([^$]*)\$([0-9]*)\$$`
+
+	proto.rxMyInfo = regexp.MustCompile(HEAD + `([^<]*)<(.+?) V:([^,]+),M:(.),H:([0-9]+)/([0-9]+)/([0-9]+),S:([0-9]+)>` + FOOT)
+	proto.rxMyInfoNoTag = regexp.MustCompile(HEAD + `([^$]*)` + FOOT) // Fallback for no tag
+
+	// Done
+	return &proto
+}
+
+func (this *NmdcProtocol) ProcessCommand(message string) {
+
+	// Zero-length protocol message
+	// ````````````````````````````
+	if len(message) == 0 {
+		return
+	}
+
+	// Public chat
+	// ```````````
+	if this.rxPublicChat.MatchString(message) {
+		pubchat_parts := this.rxPublicChat.FindStringSubmatch(message)
+		this.hc.processEvent(HubEvent{EventType: EVENT_PUBLIC, Nick: pubchat_parts[1], Message: this.Unescape(pubchat_parts[2])})
+		return
+	}
+
+	// System messages
+	// ```````````````
+	if message[0] != '$' {
+		this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_HUB, Nick: this.hc.HubName, Message: this.Unescape(message)})
+		return
+	}
+
+	// Protocol messages
+	// `````````````````
+
+	commandParts := strings.SplitN(message, " ", 2)
+	switch commandParts[0] {
+
+	case "$Lock":
+		this.hc.SayRaw("$Supports NoHello NoGetINFO UserCommand UserIP2 QuickList ChatOnly|" +
+			"$Key " + this.unlock([]byte(commandParts[1])) + "|")
+		this.sentOurHello = false
+
+	case "$Hello":
+		if commandParts[1] == this.hc.Hco.Self.Nick && !this.sentOurHello {
+			this.hc.SayRaw("$Version 1,0091|")
+			this.hc.SayRaw("$GetNickList|")
+			this.sayInfo()
+			this.sentOurHello = true
+
+		} else {
+			this.hc.userJoined_NameOnly(commandParts[1])
+
+		}
+
+	case "$HubName":
+		this.hc.HubName = commandParts[1]
+		this.hc.processEvent(HubEvent{EventType: EVENT_HUBNAME_CHANGED, Nick: commandParts[1]})
+
+	case "$ValidateDenide": // sic
+		if len(this.hc.Hco.NickPassword) > 0 {
+			this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN, Message: "Incorrect password."})
+		} else {
+			this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN, Message: "Nick already in use."})
+		}
+
+	case "$HubIsFull":
+		this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN, Message: "Hub is full."})
+
+	case "$BadPass":
+		this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN, Message: "Incorrect password."})
+
+	case "$GetPass":
+		if len(this.hc.Hco.NickPassword) == 0 {
+			// We've got a problem. MyPass with no arguments is a syntax error with no message = instant close
+			// Just drop the connection
+			this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN, Message: "This account is passworded."})
+			this.hc.Disconnect()
+		} else {
+			this.hc.SayRaw("$MyPass " + this.Escape(this.hc.Hco.NickPassword) + "|")
+		}
+
+	case "$Quit":
+		this.hc.userLock.Lock()
+		delete(this.hc.users, commandParts[1])
+		this.hc.userLock.Unlock() // Don't lock over a processEvent boundary
+
+		this.hc.processEvent(HubEvent{EventType: EVENT_USER_PART, Nick: commandParts[1]})
+
+	case "$MyINFO":
+		u, err := this.parseMyINFO(commandParts[1])
+		if err != nil {
+			this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: err.Error()})
+			return
+		}
+
+		this.hc.userJoined_Full(u)
+
+	case "$NickList":
+		nicklist := strings.Split(commandParts[1], "$$")
+		for _, nick := range nicklist {
+			if len(nick) > 0 {
+				this.hc.userJoined_NameOnly(nick)
+			}
+		}
+
+	case "$OpList":
+		oplist := strings.Split(commandParts[1], "$$")
+		opmap := map[string]struct{}{}
+
+		// Organise/sort the list, and ensure we're not meeting an operator for
+		//  the first time
+		for _, nick := range oplist {
+			if len(nick) > 0 {
+				opmap[nick] = struct{}{}
+				this.hc.userJoined_NameOnly(nick) // assert existence; noop otherwise
+			}
+		}
+
+		// Mark all mentioned nicks as being operators, and all unmentioned nicks
+		//  as being /not/ an operator. (second pass minimises RW mutex use)
+		func() {
+			this.hc.userLock.Lock()
+			defer this.hc.userLock.Unlock()
+
+			for nick, userinfo := range this.hc.users {
+				_, isop := opmap[nick]
+
+				userinfo.IsOperator = isop
+				this.hc.users[nick] = userinfo
+			}
+		}()
+
+	case "$To:":
+		valid := false
+		if this.rxIncomingTo.MatchString(commandParts[1]) {
+			txparts := this.rxIncomingTo.FindStringSubmatch(commandParts[1])
+			if txparts[1] == this.hc.Hco.Self.Nick && txparts[2] == txparts[3] {
+				this.hc.processEvent(HubEvent{EventType: EVENT_PRIVATE, Nick: txparts[2], Message: this.Unescape(txparts[4])})
+				valid = true
+			}
+		}
+
+		if !valid {
+			this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Malformed private message '" + commandParts[1] + "'"})
+		}
+
+	case "$UserIP":
+		this.hc.userLock.Lock()
+
+		pairs := strings.Split(commandParts[1], "$$")
+		notifyOfUpdate := make([]string, 0, len(pairs))
+
+	nextIPPair:
+		for _, pair := range pairs {
+			parts := strings.SplitN(pair, " ", 2)
+			if len(parts) != 2 {
+				// ????
+				continue nextIPPair
+			}
+
+			ip2nick := parts[0]
+			ip2addr := parts[1]
+
+			uinfo, ok := this.hc.users[ip2nick]
+			if !ok {
+				this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Recieved IP '" + ip2addr + "' for unknown user '" + ip2nick + "'"})
+				continue nextIPPair
+			}
+
+			if uinfo.IPAddress != ip2addr {
+				uinfo.IPAddress = ip2addr
+				notifyOfUpdate = append(notifyOfUpdate, ip2nick)
+				this.hc.users[ip2nick] = uinfo
+			}
+		}
+
+		this.hc.userLock.Unlock()
+
+		for _, nick := range notifyOfUpdate {
+			this.hc.processEvent(HubEvent{EventType: EVENT_USER_UPDATED_INFO, Nick: nick})
+		}
+
+	case "$ForceMove":
+		this.hc.Hco.Address = HubAddress(commandParts[1])
+		this.hc.conn.Close() // we'll reconnect onto the new address
+
+	case "$UserCommand":
+		// $UserCommand 1 1 Group chat\New group chat$<%[mynick]> !groupchat_new&#124;|
+		if this.rxUserCommand.MatchString(commandParts[1]) {
+			usc := this.rxUserCommand.FindStringSubmatch(commandParts[1])
+
+			typeInt, _ := strconv.Atoi(usc[1])
+			contextInt, _ := strconv.Atoi(usc[2])
+
+			uscStruct := UserCommand{
+				Type:    UserCommandType(typeInt),
+				Context: UserCommandContext(contextInt),
+				Message: usc[3],
+				Command: this.Unescape(usc[4]),
+			}
+
+			this.hc.processEvent(HubEvent{EventType: EVENT_USERCOMMAND, UserCommand: &uscStruct})
+
+		} else {
+			this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Malformed usercommand '" + commandParts[1] + "'"})
+		}
+
+	case "$Supports":
+		this.supports = make(map[string]struct{})
+		for _, s := range strings.Split(commandParts[1], " ") {
+			this.supports[s] = struct{}{}
+		}
+
+		if !this.sentOurHello {
+
+			// Need to log in.
+			// If the hub supports QuickList, we can skip one network roundtrip
+			if _, ok := this.supports["QuickList"]; ok {
+				this.sayInfo()
+				this.hc.SayRaw("$GetNickList|")
+			} else {
+				this.hc.SayRaw("$ValidateNick " + this.Escape(this.hc.Hco.Self.Nick) + "|")
+			}
+
+			// This also counts as the end of the handshake from our POV. Consider
+			// ourselves logged in
+			this.sentOurHello = true
+			if this.hc.State != CONNECTIONSTATE_CONNECTED {
+				this.hc.processEvent(HubEvent{EventType: EVENT_CONNECTION_STATE_CHANGED, StateChange: CONNECTIONSTATE_CONNECTED})
+				this.hc.State = CONNECTIONSTATE_CONNECTED
+			}
+
+		}
+
+	// IGNORABLE COMMANDS
+	case "$HubTopic":
+	case "$Search":
+	case "$ConnectToMe":
+
+	default:
+		this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Unhandled protocol command '" + commandParts[0] + "'"})
+
+	}
+}
+
+func (this *NmdcProtocol) Escape(plaintext string) string {
+	v1 := strings.Replace(plaintext, "&", "&amp;", -1)
+	v2 := strings.Replace(v1, "|", "&#124;", -1)
+	return strings.Replace(v2, "$", "&#36;", -1)
+}
+
+func (this *NmdcProtocol) Unescape(encoded string) string {
+	v1 := strings.Replace(encoded, "&#36;", "$", -1)
+	v2 := strings.Replace(v1, "&#124;", "|", -1)
+	return strings.Replace(v2, "&amp;", "&", -1)
+}
+
+func (this *NmdcProtocol) SayPublic(message string) {
+	this.hc.SayRaw("<" + this.hc.Hco.Self.Nick + "> " + this.Escape(message) + "|")
+}
+
+func (this *NmdcProtocol) SayPrivate(recipient, message string) {
+	this.hc.SayRaw("$To: " + recipient + " From: " + this.hc.Hco.Self.Nick + " $<" + this.hc.Hco.Self.Nick + "> " + this.Escape(message) + "|")
+}
+
+func (this *NmdcProtocol) sayInfo() {
+	this.hc.SayRaw(this.getUserMyINFO(&this.hc.Hco.Self) + "|")
+}
+
+func (this *NmdcProtocol) parseMyINFO(protomsg string) (*UserInfo, error) {
+	ret := UserInfo{}
+
+	// Normal format (with tag in exact V/M/H/S order)
+	matches := this.rxMyInfo.FindStringSubmatch(protomsg)
+	if matches != nil {
+		ret.Nick = matches[1]
+		ret.Description = this.Unescape(matches[2])
+		ret.ClientTag = this.Unescape(matches[3])
+		ret.ClientVersion = matches[4]
+		ret.ConnectionMode = ConnectionMode(matches[5][0])
+		maybeParse(matches[6], &ret.HubsUnregistered, 0)
+		maybeParse(matches[7], &ret.HubsRegistered, 0)
+		maybeParse(matches[8], &ret.HubsOperator, 0)
+		maybeParse(matches[9], &ret.Slots, 0)
+		if len(matches[10]) > 1 {
+			ret.Speed = matches[10][:len(matches[10])-2]
+		} else {
+			ret.Speed = ""
+		}
+		ret.Flag = UserFlag(matches[10][len(matches[10])-1])
+		ret.Email = this.Unescape(matches[11])
+		maybeParse(matches[12], &ret.ShareSize, 0)
+
+		return &ret, nil
+	}
+
+	// No-tag format, used in early connection
+	matches = this.rxMyInfoNoTag.FindStringSubmatch(protomsg)
+	if matches != nil {
+		ret.Nick = matches[1]
+		ret.Description = this.Unescape(matches[2])
+		ret.ClientTag = ""
+		ret.ClientVersion = "0"
+		ret.ConnectionMode = CONNECTIONMODE_PASSIVE
+		ret.HubsUnregistered = 0
+		ret.HubsRegistered = 0
+		ret.HubsOperator = 0
+		ret.Slots = 0
+
+		if len(matches[3]) > 1 {
+			ret.Speed = matches[3][:len(matches[3])-2]
+		} else {
+			ret.Speed = ""
+		}
+		ret.Flag = UserFlag(matches[3][len(matches[3])-1])
+		ret.Email = this.Unescape(matches[4])
+		maybeParse(matches[5], &ret.ShareSize, 0)
+
+		return &ret, nil
+	}
+
+	// Couldn't get anything out of it...
+	return nil, errors.New("Malformed MyINFO")
+}
+
+// Returns the MyINFO command, WITH leading $MyINFO, and WITHOUT trailing pipe
+func (this *NmdcProtocol) getUserMyINFO(u *UserInfo) string {
+	return fmt.Sprintf(
+		"$MyINFO $ALL %s %s<%s V:%s,M:%c,H:%d/%d/%d,S:%d>$ $%s%c$%s$%d$",
+		u.Nick,
+		u.Description,
+		u.ClientTag,
+		strings.Replace(u.ClientVersion, ",", "-", -1), // just in case
+		u.ConnectionMode,
+		u.HubsUnregistered,
+		u.HubsRegistered,
+		u.HubsOperator,
+		u.Slots,
+		u.Speed,
+		u.Flag,
+		u.Email,
+		u.ShareSize,
+	)
+}
+
+func (this *NmdcProtocol) SayKeepalive() error {
+	return this.hc.SayRaw("|")
+}
+
+func (this *NmdcProtocol) ProtoMessageSeparator() string {
+	return "|"
+}
+
+func (this *NmdcProtocol) unlock(lock []byte) string {
+
+	nibble_swap := func(b byte) byte {
+		return ((b << 4) & 0xF0) | ((b >> 4) & 0x0F)
+	}
+
+	chr := func(b byte) string {
+		if b == 0 || b == 5 || b == 36 || b == 96 || b == 124 || b == 126 {
+			return fmt.Sprintf("/%%DCN%04d%%/", b)
+		} else {
+			return string(b)
+		}
+	}
+
+	key := chr(nibble_swap(lock[0] ^ lock[len(lock)-2] ^ lock[len(lock)-3] ^ 5))
+	for i := 1; i < len(lock); i += 1 {
+		key += chr(nibble_swap(lock[i] ^ lock[i-1]))
+	}
+
+	return key
+}
diff --git a/Protocol.go b/Protocol.go
new file mode 100644
index 0000000..fe95707
--- /dev/null
+++ b/Protocol.go
@@ -0,0 +1,17 @@
+package libnmdc
+
+type Protocol interface {
+	ProcessCommand(msg string)
+
+	Escape(string) string
+
+	Unescape(string) string
+
+	SayPublic(string)
+
+	SayPrivate(user, message string)
+
+	SayKeepalive() error
+
+	ProtoMessageSeparator() string
+}
diff --git a/UserInfo.go b/UserInfo.go
index 15e3e66..cc51f44 100644
--- a/UserInfo.go
+++ b/UserInfo.go
@@ -1,13 +1,5 @@
 package libnmdc
 
-import (
-	"errors"
-	"fmt"
-	"regexp"
-	"strconv"
-	"strings"
-)
-
 // This structure represents a user connected to a hub.
 type UserInfo struct {
 	Nick             string
@@ -27,19 +19,6 @@ type UserInfo struct {
 	IPAddress        string
 }
 
-var rx_myinfo *regexp.Regexp
-var rx_myinfo_notag *regexp.Regexp
-
-func init() {
-	// Format: $ALL <nick> <description>$ $<connection><flag>$<e-mail>$<sharesize>$
-
-	HEAD := `(?ms)^\$ALL ([^ ]+) `
-	FOOT := `\$.\$([^$]+)\$([^$]*)\$([0-9]*)\$$`
-
-	rx_myinfo = regexp.MustCompile(HEAD + `([^<]*)<(.+?) V:([^,]+),M:(.),H:([0-9]+)/([0-9]+)/([0-9]+),S:([0-9]+)>` + FOOT)
-	rx_myinfo_notag = regexp.MustCompile(HEAD + `([^$]*)` + FOOT) // Fallback for no tag
-}
-
 func NewUserInfo(username string) *UserInfo {
 	return &UserInfo{
 		Nick:             username,
@@ -47,87 +26,3 @@ func NewUserInfo(username string) *UserInfo {
 		HubsUnregistered: 1,
 	}
 }
-
-func maybeParse(str string, dest *uint64, default_val uint64) {
-	sz, err := strconv.ParseUint(str, 10, 64)
-	if err == nil {
-		*dest = sz
-	} else {
-		*dest = default_val
-	}
-}
-
-func (this *UserInfo) fromMyINFO(protomsg string) error {
-
-	// Normal format (with tag in exact V/M/H/S order)
-	matches := rx_myinfo.FindStringSubmatch(protomsg)
-	if matches != nil {
-		this.Nick = matches[1]
-		this.Description = Unescape(matches[2])
-		this.ClientTag = Unescape(matches[3])
-		this.ClientVersion = matches[4]
-		this.ConnectionMode = ConnectionMode(matches[5][0])
-		maybeParse(matches[6], &this.HubsUnregistered, 0)
-		maybeParse(matches[7], &this.HubsRegistered, 0)
-		maybeParse(matches[8], &this.HubsOperator, 0)
-		maybeParse(matches[9], &this.Slots, 0)
-		if len(matches[10]) > 1 {
-			this.Speed = matches[10][:len(matches[10])-2]
-		} else {
-			this.Speed = ""
-		}
-		this.Flag = UserFlag(matches[10][len(matches[10])-1])
-		this.Email = Unescape(matches[11])
-		maybeParse(matches[12], &this.ShareSize, 0)
-
-		return nil
-	}
-
-	// No-tag format, used in early connection
-	matches = rx_myinfo_notag.FindStringSubmatch(protomsg)
-	if matches != nil {
-		this.Nick = matches[1]
-		this.Description = Unescape(matches[2])
-		this.ClientTag = ""
-		this.ClientVersion = "0"
-		this.ConnectionMode = CONNECTIONMODE_PASSIVE
-		this.HubsUnregistered = 0
-		this.HubsRegistered = 0
-		this.HubsOperator = 0
-		this.Slots = 0
-
-		if len(matches[3]) > 1 {
-			this.Speed = matches[3][:len(matches[3])-2]
-		} else {
-			this.Speed = ""
-		}
-		this.Flag = UserFlag(matches[3][len(matches[3])-1])
-		this.Email = Unescape(matches[4])
-		maybeParse(matches[5], &this.ShareSize, 0)
-
-		return nil
-	}
-
-	// Couldn't get anything out of it...
-	return errors.New("Malformed MyINFO")
-}
-
-// Returns the MyINFO command, WITH leading $MyINFO, and WITHOUT trailing pipe
-func (this *UserInfo) toMyINFO() string {
-	return fmt.Sprintf(
-		"$MyINFO $ALL %s %s<%s V:%s,M:%c,H:%d/%d/%d,S:%d>$ $%s%c$%s$%d$",
-		this.Nick,
-		this.Description,
-		this.ClientTag,
-		strings.Replace(this.ClientVersion, ",", "-", -1), // just in case
-		this.ConnectionMode,
-		this.HubsUnregistered,
-		this.HubsRegistered,
-		this.HubsOperator,
-		this.Slots,
-		this.Speed,
-		this.Flag,
-		this.Email,
-		this.ShareSize,
-	)
-}
diff --git a/libnmdc.go b/libnmdc.go
index e847e75..972f63f 100644
--- a/libnmdc.go
+++ b/libnmdc.go
@@ -2,9 +2,7 @@ package libnmdc
 
 import (
 	"errors"
-	"fmt"
-	"regexp"
-	"strings"
+	"strconv"
 	"time"
 )
 
@@ -17,52 +15,21 @@ const (
 	RECONNECT_IF_NO_DATA_RECIEVED_IN time.Duration = 24 * time.Hour // we expect keepalives wayyyy more frequently than this
 )
 
-var rx_protocolMessage *regexp.Regexp
-var rx_publicChat *regexp.Regexp
-var rx_incomingTo *regexp.Regexp
-var rx_userCommand *regexp.Regexp
 var ErrNotConnected error = errors.New("Not connected")
 
-func init() {
-	// With the `m` flag, use \A instead of ^ to anchor to start
-	// This fixes accidentally finding a better match in the middle of a multi-line message
+type HubProtocol int
 
-	rx_protocolMessage = regexp.MustCompile(`(?ms)\A[^|]*\|`)
-	rx_publicChat = regexp.MustCompile(`(?ms)\A<([^>]*)> (.*)$`)
-	rx_incomingTo = regexp.MustCompile(`(?ms)\A([^ ]+) From: ([^ ]+) \$<([^>]*)> (.*)`)
-	rx_userCommand = regexp.MustCompile(`(?ms)\A(\d+) (\d+)\s?([^\$]*)\$?(.*)`)
-}
+const (
+	HubProtocolAutodetect = 0
+	HubProtocolNmdc       = 1
+	HubProtocolAdc        = 2
+)
 
-func Unescape(encoded string) string {
-	v1 := strings.Replace(encoded, "&#36;", "$", -1)
-	v2 := strings.Replace(v1, "&#124;", "|", -1)
-	return strings.Replace(v2, "&amp;", "&", -1)
-}
-
-func Escape(plaintext string) string {
-	v1 := strings.Replace(plaintext, "&", "&amp;", -1)
-	v2 := strings.Replace(v1, "|", "&#124;", -1)
-	return strings.Replace(v2, "$", "&#36;", -1)
-}
-
-func unlock(lock []byte) string {
-
-	nibble_swap := func(b byte) byte {
-		return ((b << 4) & 0xF0) | ((b >> 4) & 0x0F)
+func maybeParse(str string, dest *uint64, default_val uint64) {
+	sz, err := strconv.ParseUint(str, 10, 64)
+	if err == nil {
+		*dest = sz
+	} else {
+		*dest = default_val
 	}
-
-	chr := func(b byte) string {
-		if b == 0 || b == 5 || b == 36 || b == 96 || b == 124 || b == 126 {
-			return fmt.Sprintf("/%%DCN%04d%%/", b)
-		} else {
-			return string(b)
-		}
-	}
-
-	key := chr(nibble_swap(lock[0] ^ lock[len(lock)-2] ^ lock[len(lock)-3] ^ 5))
-	for i := 1; i < len(lock); i += 1 {
-		key += chr(nibble_swap(lock[i] ^ lock[i-1]))
-	}
-
-	return key
 }

From 2a60330e7c17d9c947b2a28161986cf50913ccee Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Wed, 22 Nov 2017 19:11:11 +1300
Subject: [PATCH 02/32] HubEvent explicit types

--HG--
branch : adc
---
 HubEvent.go | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/HubEvent.go b/HubEvent.go
index 82ac88d..3334328 100644
--- a/HubEvent.go
+++ b/HubEvent.go
@@ -1,21 +1,21 @@
 package libnmdc
 
-const (
-	EVENT_PUBLIC                   = 1
-	EVENT_PRIVATE                  = 2
-	EVENT_SYSTEM_MESSAGE_FROM_HUB  = 3
-	EVENT_SYSTEM_MESSAGE_FROM_CONN = 4
-	EVENT_USER_JOINED              = 5
-	EVENT_USER_PART                = 6
-	EVENT_USER_UPDATED_INFO        = 7
-	EVENT_CONNECTION_STATE_CHANGED = 8
-	EVENT_HUBNAME_CHANGED          = 9
-	EVENT_DEBUG_MESSAGE            = 10
-	EVENT_USERCOMMAND              = 11
-)
-
 type HubEventType int
 
+const (
+	EVENT_PUBLIC                   HubEventType = 1
+	EVENT_PRIVATE                  HubEventType = 2
+	EVENT_SYSTEM_MESSAGE_FROM_HUB  HubEventType = 3
+	EVENT_SYSTEM_MESSAGE_FROM_CONN HubEventType = 4
+	EVENT_USER_JOINED              HubEventType = 5
+	EVENT_USER_PART                HubEventType = 6
+	EVENT_USER_UPDATED_INFO        HubEventType = 7
+	EVENT_CONNECTION_STATE_CHANGED HubEventType = 8
+	EVENT_HUBNAME_CHANGED          HubEventType = 9
+	EVENT_DEBUG_MESSAGE            HubEventType = 10
+	EVENT_USERCOMMAND              HubEventType = 11
+)
+
 type HubEvent struct {
 	EventType   HubEventType
 	Nick        string

From 5c4d6d8355c1afe3909bdf5b0c415766eae37328 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Wed, 22 Nov 2017 19:11:34 +1300
Subject: [PATCH 03/32] further reduce protocol interface surface

--HG--
branch : adc
---
 HubConnection.go | 10 +++++++++-
 NmdcProtocol.go  | 34 +++++++++++++++-------------------
 Protocol.go      |  6 ------
 3 files changed, 24 insertions(+), 26 deletions(-)

diff --git a/HubConnection.go b/HubConnection.go
index 6ee8597..85b670d 100644
--- a/HubConnection.go
+++ b/HubConnection.go
@@ -101,6 +101,14 @@ func (this *HubConnection) SayRaw(protocolCommand string) error {
 	return err
 }
 
+func (this *HubConnection) SayKeepalive() error {
+	if !this.connValid {
+		return ErrNotConnected
+	}
+
+	return this.SayRaw(this.proto.ProtoMessageSeparator())
+}
+
 func (this *HubConnection) Disconnect() {
 	this.autoReconnect = false
 	if this.conn != nil {
@@ -152,7 +160,7 @@ func (this *HubConnection) worker() {
 				err = nil
 
 				// Send KA packet
-				err = this.proto.SayKeepalive()
+				err = this.SayKeepalive()
 			}
 
 			if nbytes > 0 {
diff --git a/NmdcProtocol.go b/NmdcProtocol.go
index 1ac3fd1..2c4afeb 100644
--- a/NmdcProtocol.go
+++ b/NmdcProtocol.go
@@ -57,14 +57,14 @@ func (this *NmdcProtocol) ProcessCommand(message string) {
 	// ```````````
 	if this.rxPublicChat.MatchString(message) {
 		pubchat_parts := this.rxPublicChat.FindStringSubmatch(message)
-		this.hc.processEvent(HubEvent{EventType: EVENT_PUBLIC, Nick: pubchat_parts[1], Message: this.Unescape(pubchat_parts[2])})
+		this.hc.processEvent(HubEvent{EventType: EVENT_PUBLIC, Nick: pubchat_parts[1], Message: this.unescape(pubchat_parts[2])})
 		return
 	}
 
 	// System messages
 	// ```````````````
 	if message[0] != '$' {
-		this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_HUB, Nick: this.hc.HubName, Message: this.Unescape(message)})
+		this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_HUB, Nick: this.hc.HubName, Message: this.unescape(message)})
 		return
 	}
 
@@ -115,7 +115,7 @@ func (this *NmdcProtocol) ProcessCommand(message string) {
 			this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN, Message: "This account is passworded."})
 			this.hc.Disconnect()
 		} else {
-			this.hc.SayRaw("$MyPass " + this.Escape(this.hc.Hco.NickPassword) + "|")
+			this.hc.SayRaw("$MyPass " + this.escape(this.hc.Hco.NickPassword) + "|")
 		}
 
 	case "$Quit":
@@ -174,7 +174,7 @@ func (this *NmdcProtocol) ProcessCommand(message string) {
 		if this.rxIncomingTo.MatchString(commandParts[1]) {
 			txparts := this.rxIncomingTo.FindStringSubmatch(commandParts[1])
 			if txparts[1] == this.hc.Hco.Self.Nick && txparts[2] == txparts[3] {
-				this.hc.processEvent(HubEvent{EventType: EVENT_PRIVATE, Nick: txparts[2], Message: this.Unescape(txparts[4])})
+				this.hc.processEvent(HubEvent{EventType: EVENT_PRIVATE, Nick: txparts[2], Message: this.unescape(txparts[4])})
 				valid = true
 			}
 		}
@@ -235,7 +235,7 @@ func (this *NmdcProtocol) ProcessCommand(message string) {
 				Type:    UserCommandType(typeInt),
 				Context: UserCommandContext(contextInt),
 				Message: usc[3],
-				Command: this.Unescape(usc[4]),
+				Command: this.unescape(usc[4]),
 			}
 
 			this.hc.processEvent(HubEvent{EventType: EVENT_USERCOMMAND, UserCommand: &uscStruct})
@@ -258,7 +258,7 @@ func (this *NmdcProtocol) ProcessCommand(message string) {
 				this.sayInfo()
 				this.hc.SayRaw("$GetNickList|")
 			} else {
-				this.hc.SayRaw("$ValidateNick " + this.Escape(this.hc.Hco.Self.Nick) + "|")
+				this.hc.SayRaw("$ValidateNick " + this.escape(this.hc.Hco.Self.Nick) + "|")
 			}
 
 			// This also counts as the end of the handshake from our POV. Consider
@@ -282,24 +282,24 @@ func (this *NmdcProtocol) ProcessCommand(message string) {
 	}
 }
 
-func (this *NmdcProtocol) Escape(plaintext string) string {
+func (this *NmdcProtocol) escape(plaintext string) string {
 	v1 := strings.Replace(plaintext, "&", "&amp;", -1)
 	v2 := strings.Replace(v1, "|", "&#124;", -1)
 	return strings.Replace(v2, "$", "&#36;", -1)
 }
 
-func (this *NmdcProtocol) Unescape(encoded string) string {
+func (this *NmdcProtocol) unescape(encoded string) string {
 	v1 := strings.Replace(encoded, "&#36;", "$", -1)
 	v2 := strings.Replace(v1, "&#124;", "|", -1)
 	return strings.Replace(v2, "&amp;", "&", -1)
 }
 
 func (this *NmdcProtocol) SayPublic(message string) {
-	this.hc.SayRaw("<" + this.hc.Hco.Self.Nick + "> " + this.Escape(message) + "|")
+	this.hc.SayRaw("<" + this.hc.Hco.Self.Nick + "> " + this.escape(message) + "|")
 }
 
 func (this *NmdcProtocol) SayPrivate(recipient, message string) {
-	this.hc.SayRaw("$To: " + recipient + " From: " + this.hc.Hco.Self.Nick + " $<" + this.hc.Hco.Self.Nick + "> " + this.Escape(message) + "|")
+	this.hc.SayRaw("$To: " + recipient + " From: " + this.hc.Hco.Self.Nick + " $<" + this.hc.Hco.Self.Nick + "> " + this.escape(message) + "|")
 }
 
 func (this *NmdcProtocol) sayInfo() {
@@ -313,8 +313,8 @@ func (this *NmdcProtocol) parseMyINFO(protomsg string) (*UserInfo, error) {
 	matches := this.rxMyInfo.FindStringSubmatch(protomsg)
 	if matches != nil {
 		ret.Nick = matches[1]
-		ret.Description = this.Unescape(matches[2])
-		ret.ClientTag = this.Unescape(matches[3])
+		ret.Description = this.unescape(matches[2])
+		ret.ClientTag = this.unescape(matches[3])
 		ret.ClientVersion = matches[4]
 		ret.ConnectionMode = ConnectionMode(matches[5][0])
 		maybeParse(matches[6], &ret.HubsUnregistered, 0)
@@ -327,7 +327,7 @@ func (this *NmdcProtocol) parseMyINFO(protomsg string) (*UserInfo, error) {
 			ret.Speed = ""
 		}
 		ret.Flag = UserFlag(matches[10][len(matches[10])-1])
-		ret.Email = this.Unescape(matches[11])
+		ret.Email = this.unescape(matches[11])
 		maybeParse(matches[12], &ret.ShareSize, 0)
 
 		return &ret, nil
@@ -337,7 +337,7 @@ func (this *NmdcProtocol) parseMyINFO(protomsg string) (*UserInfo, error) {
 	matches = this.rxMyInfoNoTag.FindStringSubmatch(protomsg)
 	if matches != nil {
 		ret.Nick = matches[1]
-		ret.Description = this.Unescape(matches[2])
+		ret.Description = this.unescape(matches[2])
 		ret.ClientTag = ""
 		ret.ClientVersion = "0"
 		ret.ConnectionMode = CONNECTIONMODE_PASSIVE
@@ -352,7 +352,7 @@ func (this *NmdcProtocol) parseMyINFO(protomsg string) (*UserInfo, error) {
 			ret.Speed = ""
 		}
 		ret.Flag = UserFlag(matches[3][len(matches[3])-1])
-		ret.Email = this.Unescape(matches[4])
+		ret.Email = this.unescape(matches[4])
 		maybeParse(matches[5], &ret.ShareSize, 0)
 
 		return &ret, nil
@@ -382,10 +382,6 @@ func (this *NmdcProtocol) getUserMyINFO(u *UserInfo) string {
 	)
 }
 
-func (this *NmdcProtocol) SayKeepalive() error {
-	return this.hc.SayRaw("|")
-}
-
 func (this *NmdcProtocol) ProtoMessageSeparator() string {
 	return "|"
 }
diff --git a/Protocol.go b/Protocol.go
index fe95707..d4ef391 100644
--- a/Protocol.go
+++ b/Protocol.go
@@ -3,15 +3,9 @@ package libnmdc
 type Protocol interface {
 	ProcessCommand(msg string)
 
-	Escape(string) string
-
-	Unescape(string) string
-
 	SayPublic(string)
 
 	SayPrivate(user, message string)
 
-	SayKeepalive() error
-
 	ProtoMessageSeparator() string
 }

From b022c9534a7f7f79791c3156ee97e0bf090c6475 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Wed, 22 Nov 2017 19:11:40 +1300
Subject: [PATCH 04/32] debug AdcProtocol implementation

--HG--
branch : adc
---
 AdcProtocol.go | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 AdcProtocol.go

diff --git a/AdcProtocol.go b/AdcProtocol.go
new file mode 100644
index 0000000..156ef83
--- /dev/null
+++ b/AdcProtocol.go
@@ -0,0 +1,28 @@
+package libnmdc
+
+type AdcProtocol struct {
+	hc *HubConnection
+}
+
+func NewAdcProtocol(hc *HubConnection) *AdcProtocol {
+	proto := AdcProtocol{}
+	proto.hc = hc
+
+	return &proto
+}
+
+var _ Protocol = &AdcProtocol{} // assert interface implementation
+
+func (this *AdcProtocol) ProcessCommand(msg string) {
+	this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: msg})
+}
+
+func (this *AdcProtocol) SayPublic(msg string) {
+}
+
+func (this *AdcProtocol) SayPrivate(user, message string) {
+}
+
+func (this *AdcProtocol) ProtoMessageSeparator() string {
+	return "\n"
+}

From 131ce0a63b0adef0b69505ab6f8b079a5af0f1a8 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Wed, 22 Nov 2017 19:22:13 +1300
Subject: [PATCH 05/32] protocol autodetection

--HG--
branch : adc
---
 AdcProtocol.go   |  2 ++
 HubConnection.go | 36 +++++++++++++++++++++++++++++++++---
 libnmdc.go       |  3 ++-
 3 files changed, 37 insertions(+), 4 deletions(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index 156ef83..18668c9 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -8,6 +8,8 @@ func NewAdcProtocol(hc *HubConnection) *AdcProtocol {
 	proto := AdcProtocol{}
 	proto.hc = hc
 
+	// TODO send stuff immediately
+
 	return &proto
 }
 
diff --git a/HubConnection.go b/HubConnection.go
index 85b670d..a4b7f81 100644
--- a/HubConnection.go
+++ b/HubConnection.go
@@ -140,27 +140,56 @@ func (this *HubConnection) worker() {
 			if err != nil {
 				this.State = CONNECTIONSTATE_DISCONNECTED
 				this.connValid = false
+				this.proto = nil
 
 			} else {
 				this.State = CONNECTIONSTATE_CONNECTING
 				this.connValid = true
 				this.processEvent(HubEvent{EventType: EVENT_CONNECTION_STATE_CHANGED, StateChange: CONNECTIONSTATE_CONNECTING})
 
+				if this.Hco.Address.GetProtocol() == HubProtocolNmdc {
+					this.proto = NewNmdcProtocol(this)
+				} else if this.Hco.Address.GetProtocol() == HubProtocolAdc {
+					this.proto = NewAdcProtocol(this)
+				} else {
+					this.proto = nil
+				}
+
 			}
 		}
 
 		// Read from socket into our local buffer (blocking)
 		if this.connValid {
+
 			readBuff := make([]byte, 1024)
-			this.conn.SetReadDeadline(time.Now().Add(SEND_KEEPALIVE_EVERY))
+
+			if this.proto == nil {
+				// Haven't determined if this is ADC or NMDC
+				// If we get data in this interval, it's NMDC; otherwise it's ADC
+				this.conn.SetReadDeadline(time.Now().Add(AUTODETECT_ADC_NMDC_TIMEOUT))
+			} else {
+				// Normal
+				this.conn.SetReadDeadline(time.Now().Add(SEND_KEEPALIVE_EVERY))
+			}
+
 			nbytes, err = this.conn.Read(readBuff)
 
 			if checkIsNetTimeout(err) {
 				// No data before read deadline
 				err = nil
 
-				// Send KA packet
-				err = this.SayKeepalive()
+				if this.proto == nil {
+					// Autodetect: switch to ADC
+					this.proto = NewAdcProtocol(this)
+				} else {
+					// Normal
+					// Send KA packet
+					err = this.SayKeepalive()
+				}
+			}
+
+			if this.proto == nil {
+				this.proto = NewNmdcProtocol(this)
 			}
 
 			if nbytes > 0 {
@@ -197,6 +226,7 @@ func (this *HubConnection) worker() {
 			this.State = CONNECTIONSTATE_DISCONNECTED
 			this.conn = nil
 			this.connValid = false
+			this.proto = nil
 			this.processEvent(HubEvent{EventType: EVENT_CONNECTION_STATE_CHANGED, StateChange: CONNECTIONSTATE_DISCONNECTED, Message: err.Error()})
 
 			if this.autoReconnect {
diff --git a/libnmdc.go b/libnmdc.go
index 972f63f..34c98fb 100644
--- a/libnmdc.go
+++ b/libnmdc.go
@@ -8,11 +8,12 @@ import (
 
 const (
 	DEFAULT_CLIENT_TAG               string        = "libnmdc.go"
-	DEFAULT_CLIENT_VERSION           string        = "0.15"
+	DEFAULT_CLIENT_VERSION           string        = "0.16"
 	DEFAULT_HUB_NAME                 string        = "(unknown)"
 	SEND_KEEPALIVE_EVERY             time.Duration = 29 * time.Second
 	AUTO_RECONNECT_AFTER             time.Duration = 30 * time.Second
 	RECONNECT_IF_NO_DATA_RECIEVED_IN time.Duration = 24 * time.Hour // we expect keepalives wayyyy more frequently than this
+	AUTODETECT_ADC_NMDC_TIMEOUT      time.Duration = 3 * time.Second
 )
 
 var ErrNotConnected error = errors.New("Not connected")

From 23e107f7586a3e05ce3cb68921d61b10fe55d534 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Wed, 22 Nov 2017 20:02:11 +1300
Subject: [PATCH 06/32] working protocol autodetection

--HG--
branch : adc
---
 AdcProtocol.go        |  4 +--
 AutodetectProtocol.go | 80 +++++++++++++++++++++++++++++++++++++++++++
 HubAddress.go         |  2 +-
 HubConnection.go      | 57 +++++++++++-------------------
 NmdcProtocol.go       |  4 +--
 Protocol.go           | 20 +++++++++++
 libnmdc.go            |  8 -----
 7 files changed, 123 insertions(+), 52 deletions(-)
 create mode 100644 AutodetectProtocol.go

diff --git a/AdcProtocol.go b/AdcProtocol.go
index 18668c9..0dc3497 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -4,7 +4,7 @@ type AdcProtocol struct {
 	hc *HubConnection
 }
 
-func NewAdcProtocol(hc *HubConnection) *AdcProtocol {
+func NewAdcProtocol(hc *HubConnection) Protocol {
 	proto := AdcProtocol{}
 	proto.hc = hc
 
@@ -13,8 +13,6 @@ func NewAdcProtocol(hc *HubConnection) *AdcProtocol {
 	return &proto
 }
 
-var _ Protocol = &AdcProtocol{} // assert interface implementation
-
 func (this *AdcProtocol) ProcessCommand(msg string) {
 	this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: msg})
 }
diff --git a/AutodetectProtocol.go b/AutodetectProtocol.go
new file mode 100644
index 0000000..8ab97da
--- /dev/null
+++ b/AutodetectProtocol.go
@@ -0,0 +1,80 @@
+package libnmdc
+
+import (
+	"sync"
+	"time"
+)
+
+type AutodetectProtocol struct {
+	hc *HubConnection
+
+	realProtoMut sync.Mutex
+	realProto    Protocol
+}
+
+func NewAutodetectProtocol(hc *HubConnection) Protocol {
+	proto := AutodetectProtocol{
+		hc:        hc,
+		realProto: nil,
+	}
+
+	go proto.timeout()
+
+	return &proto
+}
+
+func (this *AutodetectProtocol) timeout() {
+	time.Sleep(AUTODETECT_ADC_NMDC_TIMEOUT)
+
+	this.realProtoMut.Lock()
+	defer this.realProtoMut.Unlock()
+
+	if this.realProto == nil {
+		this.realProto = NewAdcProtocol(this.hc)
+		this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Detected ADC protocol"})
+	}
+}
+
+func (this *AutodetectProtocol) ProcessCommand(msg string) {
+	this.realProtoMut.Lock()
+	defer this.realProtoMut.Unlock()
+
+	if this.realProto == nil {
+		// We actually got some data using $ as the separator?
+		// Upgrade to a full NMDC protocol
+		this.realProto = NewNmdcProtocol(this.hc)
+		this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Detected NMDC protocol"})
+	}
+
+	this.realProto.ProcessCommand(msg)
+}
+
+func (this *AutodetectProtocol) SayPublic(msg string) {
+	this.realProtoMut.Lock()
+	defer this.realProtoMut.Unlock()
+
+	if this.realProto == nil {
+		this.realProto = NewNmdcProtocol(this.hc)
+	}
+	this.realProto.SayPublic(msg)
+}
+
+func (this *AutodetectProtocol) SayPrivate(user, message string) {
+	this.realProtoMut.Lock()
+	defer this.realProtoMut.Unlock()
+
+	if this.realProto == nil {
+		this.realProto = NewNmdcProtocol(this.hc)
+	}
+	this.realProto.SayPrivate(user, message)
+}
+
+func (this *AutodetectProtocol) ProtoMessageSeparator() string {
+	this.realProtoMut.Lock()
+	defer this.realProtoMut.Unlock()
+
+	if this.realProto == nil {
+		return "|"
+	}
+	return this.realProto.ProtoMessageSeparator()
+}
diff --git a/HubAddress.go b/HubAddress.go
index 12d5c61..1847bbf 100644
--- a/HubAddress.go
+++ b/HubAddress.go
@@ -11,7 +11,7 @@ func (this *HubAddress) parse() url.URL {
 	parsed, err := url.Parse(strings.ToLower(string(*this)))
 	if err != nil || len(parsed.Host) == 0 {
 		parsed = &url.URL{
-			Scheme: "nmdc",
+			Scheme: "",
 			Host:   string(*this),
 		}
 	}
diff --git a/HubConnection.go b/HubConnection.go
index a4b7f81..126aa28 100644
--- a/HubConnection.go
+++ b/HubConnection.go
@@ -146,14 +146,7 @@ func (this *HubConnection) worker() {
 				this.State = CONNECTIONSTATE_CONNECTING
 				this.connValid = true
 				this.processEvent(HubEvent{EventType: EVENT_CONNECTION_STATE_CHANGED, StateChange: CONNECTIONSTATE_CONNECTING})
-
-				if this.Hco.Address.GetProtocol() == HubProtocolNmdc {
-					this.proto = NewNmdcProtocol(this)
-				} else if this.Hco.Address.GetProtocol() == HubProtocolAdc {
-					this.proto = NewAdcProtocol(this)
-				} else {
-					this.proto = nil
-				}
+				this.proto = this.Hco.Address.GetProtocol().Create(this)
 
 			}
 		}
@@ -162,15 +155,7 @@ func (this *HubConnection) worker() {
 		if this.connValid {
 
 			readBuff := make([]byte, 1024)
-
-			if this.proto == nil {
-				// Haven't determined if this is ADC or NMDC
-				// If we get data in this interval, it's NMDC; otherwise it's ADC
-				this.conn.SetReadDeadline(time.Now().Add(AUTODETECT_ADC_NMDC_TIMEOUT))
-			} else {
-				// Normal
-				this.conn.SetReadDeadline(time.Now().Add(SEND_KEEPALIVE_EVERY))
-			}
+			this.conn.SetReadDeadline(time.Now().Add(SEND_KEEPALIVE_EVERY))
 
 			nbytes, err = this.conn.Read(readBuff)
 
@@ -188,35 +173,33 @@ func (this *HubConnection) worker() {
 				}
 			}
 
-			if this.proto == nil {
-				this.proto = NewNmdcProtocol(this)
-			}
-
 			if nbytes > 0 {
 				this.lastDataRecieved = time.Now()
 				fullBuffer += string(readBuff[0:nbytes])
 			}
 		}
 
-		rxSeparator := regexp.QuoteMeta(this.proto.ProtoMessageSeparator())
-		rxProtocolMessage := regexp.MustCompile(`(?ms)\A[^` + rxSeparator + `]*` + rxSeparator)
+		if this.proto != nil {
+			rxSeparator := regexp.QuoteMeta(this.proto.ProtoMessageSeparator())
+			rxProtocolMessage := regexp.MustCompile(`(?ms)\A[^` + rxSeparator + `]*` + rxSeparator)
 
-		// Attempt to parse a message block
-		for len(fullBuffer) > 0 {
-			for len(fullBuffer) > 0 && fullBuffer[0] == '|' {
-				fullBuffer = fullBuffer[1:]
+			// Attempt to parse a message block
+			for len(fullBuffer) > 0 {
+				for len(fullBuffer) > 0 && fullBuffer[0] == '|' {
+					fullBuffer = fullBuffer[1:]
+				}
+				protocolMessage := rxProtocolMessage.FindString(fullBuffer)
+				if len(protocolMessage) > 0 {
+					this.proto.ProcessCommand(protocolMessage[:len(protocolMessage)-1])
+					fullBuffer = fullBuffer[len(protocolMessage):]
+				} else {
+					break
+				}
 			}
-			protocolMessage := rxProtocolMessage.FindString(fullBuffer)
-			if len(protocolMessage) > 0 {
-				this.proto.ProcessCommand(protocolMessage[:len(protocolMessage)-1])
-				fullBuffer = fullBuffer[len(protocolMessage):]
-			} else {
-				break
-			}
-		}
 
-		if err == nil && time.Now().Sub(this.lastDataRecieved) > RECONNECT_IF_NO_DATA_RECIEVED_IN {
-			err = fmt.Errorf("No packets recieved since %s, connection presumed lost", this.lastDataRecieved.Format(time.RFC3339))
+			if err == nil && time.Now().Sub(this.lastDataRecieved) > RECONNECT_IF_NO_DATA_RECIEVED_IN {
+				err = fmt.Errorf("No packets recieved since %s, connection presumed lost", this.lastDataRecieved.Format(time.RFC3339))
+			}
 		}
 
 		// Maybe we disconnected
diff --git a/NmdcProtocol.go b/NmdcProtocol.go
index 2c4afeb..33bd276 100644
--- a/NmdcProtocol.go
+++ b/NmdcProtocol.go
@@ -20,9 +20,7 @@ type NmdcProtocol struct {
 	rxMyInfoNoTag *regexp.Regexp
 }
 
-var _ Protocol = &NmdcProtocol{} // Assert that we implement the interface
-
-func NewNmdcProtocol(hc *HubConnection) *NmdcProtocol {
+func NewNmdcProtocol(hc *HubConnection) Protocol {
 	proto := NmdcProtocol{}
 	proto.hc = hc
 
diff --git a/Protocol.go b/Protocol.go
index d4ef391..e587a11 100644
--- a/Protocol.go
+++ b/Protocol.go
@@ -9,3 +9,23 @@ type Protocol interface {
 
 	ProtoMessageSeparator() string
 }
+
+type HubProtocol int
+
+const (
+	HubProtocolAutodetect HubProtocol = 0
+	HubProtocolNmdc       HubProtocol = 1
+	HubProtocolAdc        HubProtocol = 2
+)
+
+func (hp HubProtocol) Create(hc *HubConnection) Protocol {
+	if hp == HubProtocolNmdc {
+		return NewNmdcProtocol(hc)
+
+	} else if hp == HubProtocolAdc {
+		return NewAdcProtocol(hc)
+
+	} else {
+		return NewAutodetectProtocol(hc)
+	}
+}
diff --git a/libnmdc.go b/libnmdc.go
index 34c98fb..bb7fd94 100644
--- a/libnmdc.go
+++ b/libnmdc.go
@@ -18,14 +18,6 @@ const (
 
 var ErrNotConnected error = errors.New("Not connected")
 
-type HubProtocol int
-
-const (
-	HubProtocolAutodetect = 0
-	HubProtocolNmdc       = 1
-	HubProtocolAdc        = 2
-)
-
 func maybeParse(str string, dest *uint64, default_val uint64) {
 	sz, err := strconv.ParseUint(str, 10, 64)
 	if err == nil {

From f5e516fe01cf937116f2fe5d5fec7159b45aafb2 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Wed, 22 Nov 2017 20:02:21 +1300
Subject: [PATCH 07/32] adc: initial handshake

--HG--
branch : adc
---
 AdcProtocol.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index 0dc3497..a99577e 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -8,7 +8,8 @@ func NewAdcProtocol(hc *HubConnection) Protocol {
 	proto := AdcProtocol{}
 	proto.hc = hc
 
-	// TODO send stuff immediately
+	// Start logging in
+	hc.SayRaw("HSUP ADBASE ADTIGR\n")
 
 	return &proto
 }

From ffc81f52fb6df4ed990c96a2568df21d5b41bf00 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Wed, 22 Nov 2017 20:02:30 +1300
Subject: [PATCH 08/32] redesign how the connection API works

--HG--
branch : adc
---
 HubConnection.go        |  3 +--
 HubConnectionOptions.go | 31 +++++++++----------------------
 2 files changed, 10 insertions(+), 24 deletions(-)

diff --git a/HubConnection.go b/HubConnection.go
index 126aa28..cec8d47 100644
--- a/HubConnection.go
+++ b/HubConnection.go
@@ -21,9 +21,8 @@ type HubConnection struct {
 
 	proto Protocol
 
-	// Streamed events
+	// Event callback
 	processEvent func(HubEvent)
-	OnEvent      chan HubEvent
 
 	// Private state
 	conn             net.Conn // this is an interface
diff --git a/HubConnectionOptions.go b/HubConnectionOptions.go
index 0cee9bd..997c86e 100644
--- a/HubConnectionOptions.go
+++ b/HubConnectionOptions.go
@@ -6,12 +6,6 @@ type HubConnectionOptions struct {
 	SkipAutoReconnect bool // as above
 	Self              UserInfo
 	NickPassword      string
-
-	// Returning messages in async mode
-	NumEventsToBuffer uint
-
-	// Returning messages in sync mode
-	OnEventSync func(*HubConnection, HubEvent)
 }
 
 func (this *HubConnectionOptions) prepareConnection() *HubConnection {
@@ -37,32 +31,25 @@ func (this *HubConnectionOptions) prepareConnection() *HubConnection {
 	return &hc
 }
 
-// Connects to an NMDC server, and spawns a background goroutine to handle
-// protocol messages. Events will be sent by channel to the returned hc.OnEvent,
+// ConnectAsync connects to a hub server, and spawns a background goroutine to handle
+// protocol messages. Events will be sent by channel to the supplied onEvent channel,
 // the client is responsible for selecting off this.
-func (this *HubConnectionOptions) Connect() *HubConnection {
-
-	if this.NumEventsToBuffer < 1 {
-		this.NumEventsToBuffer = 1
-	}
-
-	hc := this.prepareConnection()
-	hc.OnEvent = make(chan HubEvent, this.NumEventsToBuffer)
+func ConnectAsync(opts *HubConnectionOptions, onEvent chan HubEvent) *HubConnection {
+	hc := opts.prepareConnection()
 	hc.processEvent = func(ev HubEvent) {
-		hc.OnEvent <- ev
+		onEvent <- ev
 	}
 
 	go hc.worker()
 	return hc
 }
 
-// Connects to an NMDC server, and blocks forever to handle protocol messages.
+// ConnectSync connects to a hub server, and blocks forever to handle protocol messages.
 // Client code should supply an event handling function as hco.OnEventSync.
-func (this *HubConnectionOptions) ConnectSync() {
-	hc := this.prepareConnection()
-	hc.OnEvent = nil
+func ConnectSync(opts *HubConnectionOptions, onEvent func(hub *HubConnection, ev HubEvent)) {
+	hc := opts.prepareConnection()
 	hc.processEvent = func(ev HubEvent) {
-		this.OnEventSync(hc, ev)
+		onEvent(hc, ev)
 	}
 	hc.worker()
 }

From dc3051fd38620b2fff376217eb9d0dbe4d1e9d52 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Wed, 22 Nov 2017 20:04:15 +1300
Subject: [PATCH 09/32] remove pointer indirection from self userinfo

--HG--
branch : adc
---
 HubConnectionOptions.go | 2 +-
 NmdcProtocol.go         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/HubConnectionOptions.go b/HubConnectionOptions.go
index 997c86e..c990aaa 100644
--- a/HubConnectionOptions.go
+++ b/HubConnectionOptions.go
@@ -4,7 +4,7 @@ type HubConnectionOptions struct {
 	Address           HubAddress
 	SkipVerifyTLS     bool // using a negative verb, because bools default to false
 	SkipAutoReconnect bool // as above
-	Self              UserInfo
+	Self              *UserInfo
 	NickPassword      string
 }
 
diff --git a/NmdcProtocol.go b/NmdcProtocol.go
index 33bd276..db209fe 100644
--- a/NmdcProtocol.go
+++ b/NmdcProtocol.go
@@ -301,7 +301,7 @@ func (this *NmdcProtocol) SayPrivate(recipient, message string) {
 }
 
 func (this *NmdcProtocol) sayInfo() {
-	this.hc.SayRaw(this.getUserMyINFO(&this.hc.Hco.Self) + "|")
+	this.hc.SayRaw(this.getUserMyINFO(this.hc.Hco.Self) + "|")
 }
 
 func (this *NmdcProtocol) parseMyINFO(protomsg string) (*UserInfo, error) {

From 2fa40642a9ab4bbbafc52f6d43473163d47fbf1a Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Wed, 22 Nov 2017 20:07:26 +1300
Subject: [PATCH 10/32] switch to "hat" pattern for mutexes

--HG--
branch : adc
---
 HubConnection.go | 27 ++++++++++++++-------------
 NmdcProtocol.go  | 12 ++++++------
 2 files changed, 20 insertions(+), 19 deletions(-)

diff --git a/HubConnection.go b/HubConnection.go
index cec8d47..7cb9c4f 100644
--- a/HubConnection.go
+++ b/HubConnection.go
@@ -14,10 +14,11 @@ type HubConnection struct {
 	Hco *HubConnectionOptions
 
 	// Current remote status
-	HubName  string
-	State    ConnectionState
+	HubName string
+	State   ConnectionState
+
+	usersMut sync.RWMutex
 	users    map[string]UserInfo
-	userLock sync.RWMutex
 
 	proto Protocol
 
@@ -33,8 +34,8 @@ type HubConnection struct {
 
 // Thread-safe user accessor.
 func (this *HubConnection) Users(cb func(*map[string]UserInfo) error) error {
-	this.userLock.Lock()
-	defer this.userLock.Unlock()
+	this.usersMut.Lock()
+	defer this.usersMut.Unlock()
 
 	return cb(&this.users)
 }
@@ -48,16 +49,16 @@ func (this *HubConnection) SayPrivate(recipient string, message string) {
 }
 
 func (this *HubConnection) UserExists(nick string) bool {
-	this.userLock.RLock()
-	defer this.userLock.RUnlock()
+	this.usersMut.RLock()
+	defer this.usersMut.RUnlock()
 
 	_, already_existed := this.users[nick]
 	return already_existed
 }
 
 func (this *HubConnection) UserCount() int {
-	this.userLock.RLock()
-	defer this.userLock.RUnlock()
+	this.usersMut.RLock()
+	defer this.usersMut.RUnlock()
 
 	return len(this.users)
 }
@@ -65,9 +66,9 @@ func (this *HubConnection) UserCount() int {
 func (this *HubConnection) userJoined_NameOnly(nick string) {
 	if !this.UserExists(nick) {
 
-		this.userLock.Lock()
+		this.usersMut.Lock()
 		this.users[nick] = *NewUserInfo(nick)
-		this.userLock.Unlock() // Don't lock over a processEvent boundary
+		this.usersMut.Unlock() // Don't lock over a processEvent boundary
 
 		this.processEvent(HubEvent{EventType: EVENT_USER_JOINED, Nick: nick})
 	}
@@ -75,10 +76,10 @@ func (this *HubConnection) userJoined_NameOnly(nick string) {
 
 func (this *HubConnection) userJoined_Full(uinf *UserInfo) {
 	// n.b. also called when we get a replacement MyINFO for someone
-	this.userLock.Lock()
+	this.usersMut.Lock()
 	_, userExisted := this.users[uinf.Nick] // don't use UserExists as it would deadlock the mutex
 	this.users[uinf.Nick] = *uinf
-	this.userLock.Unlock() // Don't lock over a processEvent boundary
+	this.usersMut.Unlock() // Don't lock over a processEvent boundary
 
 	if !userExisted {
 		this.processEvent(HubEvent{EventType: EVENT_USER_JOINED, Nick: uinf.Nick})
diff --git a/NmdcProtocol.go b/NmdcProtocol.go
index db209fe..42dce25 100644
--- a/NmdcProtocol.go
+++ b/NmdcProtocol.go
@@ -117,9 +117,9 @@ func (this *NmdcProtocol) ProcessCommand(message string) {
 		}
 
 	case "$Quit":
-		this.hc.userLock.Lock()
+		this.hc.usersMut.Lock()
 		delete(this.hc.users, commandParts[1])
-		this.hc.userLock.Unlock() // Don't lock over a processEvent boundary
+		this.hc.usersMut.Unlock() // Don't lock over a processEvent boundary
 
 		this.hc.processEvent(HubEvent{EventType: EVENT_USER_PART, Nick: commandParts[1]})
 
@@ -156,8 +156,8 @@ func (this *NmdcProtocol) ProcessCommand(message string) {
 		// Mark all mentioned nicks as being operators, and all unmentioned nicks
 		//  as being /not/ an operator. (second pass minimises RW mutex use)
 		func() {
-			this.hc.userLock.Lock()
-			defer this.hc.userLock.Unlock()
+			this.hc.usersMut.Lock()
+			defer this.hc.usersMut.Unlock()
 
 			for nick, userinfo := range this.hc.users {
 				_, isop := opmap[nick]
@@ -182,7 +182,7 @@ func (this *NmdcProtocol) ProcessCommand(message string) {
 		}
 
 	case "$UserIP":
-		this.hc.userLock.Lock()
+		this.hc.usersMut.Lock()
 
 		pairs := strings.Split(commandParts[1], "$$")
 		notifyOfUpdate := make([]string, 0, len(pairs))
@@ -211,7 +211,7 @@ func (this *NmdcProtocol) ProcessCommand(message string) {
 			}
 		}
 
-		this.hc.userLock.Unlock()
+		this.hc.usersMut.Unlock()
 
 		for _, nick := range notifyOfUpdate {
 			this.hc.processEvent(HubEvent{EventType: EVENT_USER_UPDATED_INFO, Nick: nick})

From 0e8d76ef2f4622cbd45ca4fcbbccbd377ac16ea3 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Wed, 22 Nov 2017 20:07:29 +1300
Subject: [PATCH 11/32] comments

--HG--
branch : adc
---
 HubConnection.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/HubConnection.go b/HubConnection.go
index 7cb9c4f..5e6b58a 100644
--- a/HubConnection.go
+++ b/HubConnection.go
@@ -89,7 +89,7 @@ func (this *HubConnection) userJoined_Full(uinf *UserInfo) {
 }
 
 // SayRaw sends raw bytes over the TCP socket. Callers should add the protocol
-// terminating character `|` themselves.
+// terminating character themselves (e.g. `|` for NMDC).
 // Note that protocol messages are transmitted on the caller thread, not from
 // any internal libnmdc thread.
 func (this *HubConnection) SayRaw(protocolCommand string) error {
@@ -185,9 +185,12 @@ func (this *HubConnection) worker() {
 
 			// Attempt to parse a message block
 			for len(fullBuffer) > 0 {
+
+				// FIXME nmdc
 				for len(fullBuffer) > 0 && fullBuffer[0] == '|' {
 					fullBuffer = fullBuffer[1:]
 				}
+
 				protocolMessage := rxProtocolMessage.FindString(fullBuffer)
 				if len(protocolMessage) > 0 {
 					this.proto.ProcessCommand(protocolMessage[:len(protocolMessage)-1])

From 931b00a797b3ce91a9515d7a18ff2ce254152563 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Thu, 23 Nov 2017 18:23:25 +1300
Subject: [PATCH 12/32] vendor github.com/cxmcc/tiger (MIT license)

--HG--
branch : adc
---
 Gopkg.lock                                  |  15 ++
 Gopkg.toml                                  |  26 ++
 vendor/github.com/cxmcc/tiger/.gitignore    |  22 ++
 vendor/github.com/cxmcc/tiger/.travis.yml   |   7 +
 vendor/github.com/cxmcc/tiger/LICENSE       |  20 ++
 vendor/github.com/cxmcc/tiger/README.md     |  48 ++++
 vendor/github.com/cxmcc/tiger/compress.go   |  96 +++++++
 vendor/github.com/cxmcc/tiger/sboxes.go     | 269 ++++++++++++++++++++
 vendor/github.com/cxmcc/tiger/tiger.go      | 117 +++++++++
 vendor/github.com/cxmcc/tiger/tiger_test.go | 144 +++++++++++
 10 files changed, 764 insertions(+)
 create mode 100644 Gopkg.lock
 create mode 100644 Gopkg.toml
 create mode 100644 vendor/github.com/cxmcc/tiger/.gitignore
 create mode 100644 vendor/github.com/cxmcc/tiger/.travis.yml
 create mode 100644 vendor/github.com/cxmcc/tiger/LICENSE
 create mode 100644 vendor/github.com/cxmcc/tiger/README.md
 create mode 100644 vendor/github.com/cxmcc/tiger/compress.go
 create mode 100644 vendor/github.com/cxmcc/tiger/sboxes.go
 create mode 100644 vendor/github.com/cxmcc/tiger/tiger.go
 create mode 100644 vendor/github.com/cxmcc/tiger/tiger_test.go

diff --git a/Gopkg.lock b/Gopkg.lock
new file mode 100644
index 0000000..32350dc
--- /dev/null
+++ b/Gopkg.lock
@@ -0,0 +1,15 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  branch = "master"
+  name = "github.com/cxmcc/tiger"
+  packages = ["."]
+  revision = "bde35e2713d7f674987c2ecb21a6b0fc33749516"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  inputs-digest = "c88ee670a5600b482019325b6d6633bb6b5fe789596dc29ef809aa7bb013927b"
+  solver-name = "gps-cdcl"
+  solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
new file mode 100644
index 0000000..a16c0fb
--- /dev/null
+++ b/Gopkg.toml
@@ -0,0 +1,26 @@
+
+# Gopkg.toml example
+#
+# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#  name = "github.com/x/y"
+#  version = "2.4.0"
+
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/cxmcc/tiger"
diff --git a/vendor/github.com/cxmcc/tiger/.gitignore b/vendor/github.com/cxmcc/tiger/.gitignore
new file mode 100644
index 0000000..0026861
--- /dev/null
+++ b/vendor/github.com/cxmcc/tiger/.gitignore
@@ -0,0 +1,22 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
diff --git a/vendor/github.com/cxmcc/tiger/.travis.yml b/vendor/github.com/cxmcc/tiger/.travis.yml
new file mode 100644
index 0000000..69d2f6d
--- /dev/null
+++ b/vendor/github.com/cxmcc/tiger/.travis.yml
@@ -0,0 +1,7 @@
+language: go
+
+go:
+  - 1.x
+  - 1.6
+  - 1.7.x
+  - master
diff --git a/vendor/github.com/cxmcc/tiger/LICENSE b/vendor/github.com/cxmcc/tiger/LICENSE
new file mode 100644
index 0000000..c811438
--- /dev/null
+++ b/vendor/github.com/cxmcc/tiger/LICENSE
@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 Xiuming Chen
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/vendor/github.com/cxmcc/tiger/README.md b/vendor/github.com/cxmcc/tiger/README.md
new file mode 100644
index 0000000..5306b7f
--- /dev/null
+++ b/vendor/github.com/cxmcc/tiger/README.md
@@ -0,0 +1,48 @@
+Tiger cryptographic hash function for Go
+
+-----
+
+[![Build Status](https://travis-ci.org/cxmcc/tiger.svg?branch=master)](https://travis-ci.org/cxmcc/tiger)
+[![GoDoc](http://godoc.org/github.com/cxmcc/tiger?status.png)](http://godoc.org/github.com/cxmcc/tiger)
+
+
+### About Tiger
+
+* Tiger cryptographic hash function is designed by Ross Anderson and Eli Biham in 1995.
+* The size of a Tiger hash value is 192 bits. Truncated versions (Tiger/128, Tiger/160) are simply prefixes of Tiger/192.
+* Tiger2 is a variant where the message is padded by first appending a byte 0x80, rather than 0x01 as in the case of Tiger.
+* Links: [paper](http://www.cs.technion.ac.il/~biham/Reports/Tiger/), [wikipedia](http://en.wikipedia.org/wiki/Tiger_\(cryptography\))
+
+### API Documentation
+
+Implementing [hash.Hash](http://golang.org/pkg/hash/#Hash). Usage is pretty much the same as other stanard hashing libraries.  
+Documentation currently available at Godoc: [http://godoc.org/github.com/cxmcc/tiger](http://godoc.org/github.com/cxmcc/tiger)
+
+
+### Installing
+~~~
+go get github.com/cxmcc/tiger
+~~~
+
+### Example
+~~~ go
+package main
+
+import (
+  "fmt"
+  "io"
+  "github.com/cxmcc/tiger"
+)
+
+func main() {
+  h := tiger.New()
+  io.WriteString(h, "Example for tiger")
+  fmt.Printf("Output: %x\n", h.Sum(nil))
+  // Output: 82bd060e19f945014f0063e8f0e6d7decfa9edfd97e76743
+}
+~~~
+
+
+### License
+
+It's MIT License
diff --git a/vendor/github.com/cxmcc/tiger/compress.go b/vendor/github.com/cxmcc/tiger/compress.go
new file mode 100644
index 0000000..9da8b33
--- /dev/null
+++ b/vendor/github.com/cxmcc/tiger/compress.go
@@ -0,0 +1,96 @@
+package tiger
+
+import (
+	"encoding/binary"
+	"unsafe"
+)
+
+var littleEndian bool
+
+func init() {
+	x := uint32(0x04030201)
+	y := [4]byte{0x1, 0x2, 0x3, 0x4}
+	littleEndian = *(*[4]byte)(unsafe.Pointer(&x)) == y
+}
+
+func pass(a, b, c uint64, x []uint64, mul uint64) (uint64, uint64, uint64) {
+	a, b, c = round(a, b, c, x[0], mul)
+	b, c, a = round(b, c, a, x[1], mul)
+	c, a, b = round(c, a, b, x[2], mul)
+	a, b, c = round(a, b, c, x[3], mul)
+	b, c, a = round(b, c, a, x[4], mul)
+	c, a, b = round(c, a, b, x[5], mul)
+	a, b, c = round(a, b, c, x[6], mul)
+	b, c, a = round(b, c, a, x[7], mul)
+	return a, b, c
+}
+
+func round(a, b, c, x, mul uint64) (uint64, uint64, uint64) {
+	c ^= x
+	a -= t1[c&0xff] ^ t2[(c>>16)&0xff] ^ t3[(c>>32)&0xff] ^ t4[(c>>48)&0xff]
+	b += t4[(c>>8)&0xff] ^ t3[(c>>24)&0xff] ^ t2[(c>>40)&0xff] ^ t1[(c>>56)&0xff]
+	b *= mul
+	return a, b, c
+}
+
+func keySchedule(x []uint64) {
+	x[0] -= x[7] ^ 0xa5a5a5a5a5a5a5a5
+	x[1] ^= x[0]
+	x[2] += x[1]
+	x[3] -= x[2] ^ ((^x[1]) << 19)
+	x[4] ^= x[3]
+	x[5] += x[4]
+	x[6] -= x[5] ^ ((^x[4]) >> 23)
+	x[7] ^= x[6]
+	x[0] += x[7]
+	x[1] -= x[0] ^ ((^x[7]) << 19)
+	x[2] ^= x[1]
+	x[3] += x[2]
+	x[4] -= x[3] ^ ((^x[2]) >> 23)
+	x[5] ^= x[4]
+	x[6] += x[5]
+	x[7] -= x[6] ^ 0x0123456789abcdef
+}
+
+func (d *digest) compress(data []byte) {
+	// save_abc
+	a := d.a
+	b := d.b
+	c := d.c
+
+	var x []uint64
+	if littleEndian {
+		x = []uint64{
+			binary.LittleEndian.Uint64(data[0:8]),
+			binary.LittleEndian.Uint64(data[8:16]),
+			binary.LittleEndian.Uint64(data[16:24]),
+			binary.LittleEndian.Uint64(data[24:32]),
+			binary.LittleEndian.Uint64(data[32:40]),
+			binary.LittleEndian.Uint64(data[40:48]),
+			binary.LittleEndian.Uint64(data[48:56]),
+			binary.LittleEndian.Uint64(data[56:64]),
+		}
+	} else {
+		x = []uint64{
+			binary.BigEndian.Uint64(data[0:8]),
+			binary.BigEndian.Uint64(data[8:16]),
+			binary.BigEndian.Uint64(data[16:24]),
+			binary.BigEndian.Uint64(data[24:32]),
+			binary.BigEndian.Uint64(data[32:40]),
+			binary.BigEndian.Uint64(data[40:48]),
+			binary.BigEndian.Uint64(data[48:56]),
+			binary.BigEndian.Uint64(data[56:64]),
+		}
+	}
+
+	d.a, d.b, d.c = pass(d.a, d.b, d.c, x, 5)
+	keySchedule(x)
+	d.c, d.a, d.b = pass(d.c, d.a, d.b, x, 7)
+	keySchedule(x)
+	d.b, d.c, d.a = pass(d.b, d.c, d.a, x, 9)
+
+	// feedforward
+	d.a ^= a
+	d.b -= b
+	d.c += c
+}
diff --git a/vendor/github.com/cxmcc/tiger/sboxes.go b/vendor/github.com/cxmcc/tiger/sboxes.go
new file mode 100644
index 0000000..cd05dff
--- /dev/null
+++ b/vendor/github.com/cxmcc/tiger/sboxes.go
@@ -0,0 +1,269 @@
+package tiger
+
+var t1 = [...]uint64{
+	0x02aab17cf7e90c5e, 0xac424b03e243a8ec, 0x72cd5be30dd5fcd3, 0x6d019b93f6f97f3a,
+	0xcd9978ffd21f9193, 0x7573a1c9708029e2, 0xb164326b922a83c3, 0x46883eee04915870,
+	0xeaace3057103ece6, 0xc54169b808a3535c, 0x4ce754918ddec47c, 0x0aa2f4dfdc0df40c,
+	0x10b76f18a74dbefa, 0xc6ccb6235ad1ab6a, 0x13726121572fe2ff, 0x1a488c6f199d921e,
+	0x4bc9f9f4da0007ca, 0x26f5e6f6e85241c7, 0x859079dbea5947b6, 0x4f1885c5c99e8c92,
+	0xd78e761ea96f864b, 0x8e36428c52b5c17d, 0x69cf6827373063c1, 0xb607c93d9bb4c56e,
+	0x7d820e760e76b5ea, 0x645c9cc6f07fdc42, 0xbf38a078243342e0, 0x5f6b343c9d2e7d04,
+	0xf2c28aeb600b0ec6, 0x6c0ed85f7254bcac, 0x71592281a4db4fe5, 0x1967fa69ce0fed9f,
+	0xfd5293f8b96545db, 0xc879e9d7f2a7600b, 0x860248920193194e, 0xa4f9533b2d9cc0b3,
+	0x9053836c15957613, 0xdb6dcf8afc357bf1, 0x18beea7a7a370f57, 0x037117ca50b99066,
+	0x6ab30a9774424a35, 0xf4e92f02e325249b, 0x7739db07061ccae1, 0xd8f3b49ceca42a05,
+	0xbd56be3f51382f73, 0x45faed5843b0bb28, 0x1c813d5c11bf1f83, 0x8af0e4b6d75fa169,
+	0x33ee18a487ad9999, 0x3c26e8eab1c94410, 0xb510102bc0a822f9, 0x141eef310ce6123b,
+	0xfc65b90059ddb154, 0xe0158640c5e0e607, 0x884e079826c3a3cf, 0x930d0d9523c535fd,
+	0x35638d754e9a2b00, 0x4085fccf40469dd5, 0xc4b17ad28be23a4c, 0xcab2f0fc6a3e6a2e,
+	0x2860971a6b943fcd, 0x3dde6ee212e30446, 0x6222f32ae01765ae, 0x5d550bb5478308fe,
+	0xa9efa98da0eda22a, 0xc351a71686c40da7, 0x1105586d9c867c84, 0xdcffee85fda22853,
+	0xccfbd0262c5eef76, 0xbaf294cb8990d201, 0xe69464f52afad975, 0x94b013afdf133e14,
+	0x06a7d1a32823c958, 0x6f95fe5130f61119, 0xd92ab34e462c06c0, 0xed7bde33887c71d2,
+	0x79746d6e6518393e, 0x5ba419385d713329, 0x7c1ba6b948a97564, 0x31987c197bfdac67,
+	0xde6c23c44b053d02, 0x581c49fed002d64d, 0xdd474d6338261571, 0xaa4546c3e473d062,
+	0x928fce349455f860, 0x48161bbacaab94d9, 0x63912430770e6f68, 0x6ec8a5e602c6641c,
+	0x87282515337ddd2b, 0x2cda6b42034b701b, 0xb03d37c181cb096d, 0xe108438266c71c6f,
+	0x2b3180c7eb51b255, 0xdf92b82f96c08bbc, 0x5c68c8c0a632f3ba, 0x5504cc861c3d0556,
+	0xabbfa4e55fb26b8f, 0x41848b0ab3baceb4, 0xb334a273aa445d32, 0xbca696f0a85ad881,
+	0x24f6ec65b528d56c, 0x0ce1512e90f4524a, 0x4e9dd79d5506d35a, 0x258905fac6ce9779,
+	0x2019295b3e109b33, 0xf8a9478b73a054cc, 0x2924f2f934417eb0, 0x3993357d536d1bc4,
+	0x38a81ac21db6ff8b, 0x47c4fbf17d6016bf, 0x1e0faadd7667e3f5, 0x7abcff62938beb96,
+	0xa78dad948fc179c9, 0x8f1f98b72911e50d, 0x61e48eae27121a91, 0x4d62f7ad31859808,
+	0xeceba345ef5ceaeb, 0xf5ceb25ebc9684ce, 0xf633e20cb7f76221, 0xa32cdf06ab8293e4,
+	0x985a202ca5ee2ca4, 0xcf0b8447cc8a8fb1, 0x9f765244979859a3, 0xa8d516b1a1240017,
+	0x0bd7ba3ebb5dc726, 0xe54bca55b86adb39, 0x1d7a3afd6c478063, 0x519ec608e7669edd,
+	0x0e5715a2d149aa23, 0x177d4571848ff194, 0xeeb55f3241014c22, 0x0f5e5ca13a6e2ec2,
+	0x8029927b75f5c361, 0xad139fabc3d6e436, 0x0d5df1a94ccf402f, 0x3e8bd948bea5dfc8,
+	0xa5a0d357bd3ff77e, 0xa2d12e251f74f645, 0x66fd9e525e81a082, 0x2e0c90ce7f687a49,
+	0xc2e8bcbeba973bc5, 0x000001bce509745f, 0x423777bbe6dab3d6, 0xd1661c7eaef06eb5,
+	0xa1781f354daacfd8, 0x2d11284a2b16affc, 0xf1fc4f67fa891d1f, 0x73ecc25dcb920ada,
+	0xae610c22c2a12651, 0x96e0a810d356b78a, 0x5a9a381f2fe7870f, 0xd5ad62ede94e5530,
+	0xd225e5e8368d1427, 0x65977b70c7af4631, 0x99f889b2de39d74f, 0x233f30bf54e1d143,
+	0x9a9675d3d9a63c97, 0x5470554ff334f9a8, 0x166acb744a4f5688, 0x70c74caab2e4aead,
+	0xf0d091646f294d12, 0x57b82a89684031d1, 0xefd95a5a61be0b6b, 0x2fbd12e969f2f29a,
+	0x9bd37013feff9fe8, 0x3f9b0404d6085a06, 0x4940c1f3166cfe15, 0x09542c4dcdf3defb,
+	0xb4c5218385cd5ce3, 0xc935b7dc4462a641, 0x3417f8a68ed3b63f, 0xb80959295b215b40,
+	0xf99cdaef3b8c8572, 0x018c0614f8fcb95d, 0x1b14accd1a3acdf3, 0x84d471f200bb732d,
+	0xc1a3110e95e8da16, 0x430a7220bf1a82b8, 0xb77e090d39df210e, 0x5ef4bd9f3cd05e9d,
+	0x9d4ff6da7e57a444, 0xda1d60e183d4a5f8, 0xb287c38417998e47, 0xfe3edc121bb31886,
+	0xc7fe3ccc980ccbef, 0xe46fb590189bfd03, 0x3732fd469a4c57dc, 0x7ef700a07cf1ad65,
+	0x59c64468a31d8859, 0x762fb0b4d45b61f6, 0x155baed099047718, 0x68755e4c3d50baa6,
+	0xe9214e7f22d8b4df, 0x2addbf532eac95f4, 0x32ae3909b4bd0109, 0x834df537b08e3450,
+	0xfa209da84220728d, 0x9e691d9b9efe23f7, 0x0446d288c4ae8d7f, 0x7b4cc524e169785b,
+	0x21d87f0135ca1385, 0xcebb400f137b8aa5, 0x272e2b66580796be, 0x3612264125c2b0de,
+	0x057702bdad1efbb2, 0xd4babb8eacf84be9, 0x91583139641bc67b, 0x8bdc2de08036e024,
+	0x603c8156f49f68ed, 0xf7d236f7dbef5111, 0x9727c4598ad21e80, 0xa08a0896670a5fd7,
+	0xcb4a8f4309eba9cb, 0x81af564b0f7036a1, 0xc0b99aa778199abd, 0x959f1ec83fc8e952,
+	0x8c505077794a81b9, 0x3acaaf8f056338f0, 0x07b43f50627a6778, 0x4a44ab49f5eccc77,
+	0x3bc3d6e4b679ee98, 0x9cc0d4d1cf14108c, 0x4406c00b206bc8a0, 0x82a18854c8d72d89,
+	0x67e366b35c3c432c, 0xb923dd61102b37f2, 0x56ab2779d884271d, 0xbe83e1b0ff1525af,
+	0xfb7c65d4217e49a9, 0x6bdbe0e76d48e7d4, 0x08df828745d9179e, 0x22ea6a9add53bd34,
+	0xe36e141c5622200a, 0x7f805d1b8cb750ee, 0xafe5c7a59f58e837, 0xe27f996a4fb1c23c,
+	0xd3867dfb0775f0d0, 0xd0e673de6e88891a, 0x123aeb9eafb86c25, 0x30f1d5d5c145b895,
+	0xbb434a2dee7269e7, 0x78cb67ecf931fa38, 0xf33b0372323bbf9c, 0x52d66336fb279c74,
+	0x505f33ac0afb4eaa, 0xe8a5cd99a2cce187, 0x534974801e2d30bb, 0x8d2d5711d5876d90,
+	0x1f1a412891bc038e, 0xd6e2e71d82e56648, 0x74036c3a497732b7, 0x89b67ed96361f5ab,
+	0xffed95d8f1ea02a2, 0xe72b3bd61464d43d, 0xa6300f170bdc4820, 0xebc18760ed78a77a,
+}
+
+var t2 = [...]uint64{
+	0xe6a6be5a05a12138, 0xb5a122a5b4f87c98, 0x563c6089140b6990, 0x4c46cb2e391f5dd5,
+	0xd932addbc9b79434, 0x08ea70e42015aff5, 0xd765a6673e478cf1, 0xc4fb757eab278d99,
+	0xdf11c6862d6e0692, 0xddeb84f10d7f3b16, 0x6f2ef604a665ea04, 0x4a8e0f0ff0e0dfb3,
+	0xa5edeef83dbcba51, 0xfc4f0a2a0ea4371e, 0xe83e1da85cb38429, 0xdc8ff882ba1b1ce2,
+	0xcd45505e8353e80d, 0x18d19a00d4db0717, 0x34a0cfeda5f38101, 0x0be77e518887caf2,
+	0x1e341438b3c45136, 0xe05797f49089ccf9, 0xffd23f9df2591d14, 0x543dda228595c5cd,
+	0x661f81fd99052a33, 0x8736e641db0f7b76, 0x15227725418e5307, 0xe25f7f46162eb2fa,
+	0x48a8b2126c13d9fe, 0xafdc541792e76eea, 0x03d912bfc6d1898f, 0x31b1aafa1b83f51b,
+	0xf1ac2796e42ab7d9, 0x40a3a7d7fcd2ebac, 0x1056136d0afbbcc5, 0x7889e1dd9a6d0c85,
+	0xd33525782a7974aa, 0xa7e25d09078ac09b, 0xbd4138b3eac6edd0, 0x920abfbe71eb9e70,
+	0xa2a5d0f54fc2625c, 0xc054e36b0b1290a3, 0xf6dd59ff62fe932b, 0x3537354511a8ac7d,
+	0xca845e9172fadcd4, 0x84f82b60329d20dc, 0x79c62ce1cd672f18, 0x8b09a2add124642c,
+	0xd0c1e96a19d9e726, 0x5a786a9b4ba9500c, 0x0e020336634c43f3, 0xc17b474aeb66d822,
+	0x6a731ae3ec9baac2, 0x8226667ae0840258, 0x67d4567691caeca5, 0x1d94155c4875adb5,
+	0x6d00fd985b813fdf, 0x51286efcb774cd06, 0x5e8834471fa744af, 0xf72ca0aee761ae2e,
+	0xbe40e4cdaee8e09a, 0xe9970bbb5118f665, 0x726e4beb33df1964, 0x703b000729199762,
+	0x4631d816f5ef30a7, 0xb880b5b51504a6be, 0x641793c37ed84b6c, 0x7b21ed77f6e97d96,
+	0x776306312ef96b73, 0xae528948e86ff3f4, 0x53dbd7f286a3f8f8, 0x16cadce74cfc1063,
+	0x005c19bdfa52c6dd, 0x68868f5d64d46ad3, 0x3a9d512ccf1e186a, 0x367e62c2385660ae,
+	0xe359e7ea77dcb1d7, 0x526c0773749abe6e, 0x735ae5f9d09f734b, 0x493fc7cc8a558ba8,
+	0xb0b9c1533041ab45, 0x321958ba470a59bd, 0x852db00b5f46c393, 0x91209b2bd336b0e5,
+	0x6e604f7d659ef19f, 0xb99a8ae2782ccb24, 0xccf52ab6c814c4c7, 0x4727d9afbe11727b,
+	0x7e950d0c0121b34d, 0x756f435670ad471f, 0xf5add442615a6849, 0x4e87e09980b9957a,
+	0x2acfa1df50aee355, 0xd898263afd2fd556, 0xc8f4924dd80c8fd6, 0xcf99ca3d754a173a,
+	0xfe477bacaf91bf3c, 0xed5371f6d690c12d, 0x831a5c285e687094, 0xc5d3c90a3708a0a4,
+	0x0f7f903717d06580, 0x19f9bb13b8fdf27f, 0xb1bd6f1b4d502843, 0x1c761ba38fff4012,
+	0x0d1530c4e2e21f3b, 0x8943ce69a7372c8a, 0xe5184e11feb5ce66, 0x618bdb80bd736621,
+	0x7d29bad68b574d0b, 0x81bb613e25e6fe5b, 0x071c9c10bc07913f, 0xc7beeb7909ac2d97,
+	0xc3e58d353bc5d757, 0xeb017892f38f61e8, 0xd4effb9c9b1cc21a, 0x99727d26f494f7ab,
+	0xa3e063a2956b3e03, 0x9d4a8b9a4aa09c30, 0x3f6ab7d500090fb4, 0x9cc0f2a057268ac0,
+	0x3dee9d2dedbf42d1, 0x330f49c87960a972, 0xc6b2720287421b41, 0x0ac59ec07c00369c,
+	0xef4eac49cb353425, 0xf450244eef0129d8, 0x8acc46e5caf4deb6, 0x2ffeab63989263f7,
+	0x8f7cb9fe5d7a4578, 0x5bd8f7644e634635, 0x427a7315bf2dc900, 0x17d0c4aa2125261c,
+	0x3992486c93518e50, 0xb4cbfee0a2d7d4c3, 0x7c75d6202c5ddd8d, 0xdbc295d8e35b6c61,
+	0x60b369d302032b19, 0xce42685fdce44132, 0x06f3ddb9ddf65610, 0x8ea4d21db5e148f0,
+	0x20b0fce62fcd496f, 0x2c1b912358b0ee31, 0xb28317b818f5a308, 0xa89c1e189ca6d2cf,
+	0x0c6b18576aaadbc8, 0xb65deaa91299fae3, 0xfb2b794b7f1027e7, 0x04e4317f443b5beb,
+	0x4b852d325939d0a6, 0xd5ae6beefb207ffc, 0x309682b281c7d374, 0xbae309a194c3b475,
+	0x8cc3f97b13b49f05, 0x98a9422ff8293967, 0x244b16b01076ff7c, 0xf8bf571c663d67ee,
+	0x1f0d6758eee30da1, 0xc9b611d97adeb9b7, 0xb7afd5887b6c57a2, 0x6290ae846b984fe1,
+	0x94df4cdeacc1a5fd, 0x058a5bd1c5483aff, 0x63166cc142ba3c37, 0x8db8526eb2f76f40,
+	0xe10880036f0d6d4e, 0x9e0523c9971d311d, 0x45ec2824cc7cd691, 0x575b8359e62382c9,
+	0xfa9e400dc4889995, 0xd1823ecb45721568, 0xdafd983b8206082f, 0xaa7d29082386a8cb,
+	0x269fcd4403b87588, 0x1b91f5f728bdd1e0, 0xe4669f39040201f6, 0x7a1d7c218cf04ade,
+	0x65623c29d79ce5ce, 0x2368449096c00bb1, 0xab9bf1879da503ba, 0xbc23ecb1a458058e,
+	0x9a58df01bb401ecc, 0xa070e868a85f143d, 0x4ff188307df2239e, 0x14d565b41a641183,
+	0xee13337452701602, 0x950e3dcf3f285e09, 0x59930254b9c80953, 0x3bf299408930da6d,
+	0xa955943f53691387, 0xa15edecaa9cb8784, 0x29142127352be9a0, 0x76f0371fff4e7afb,
+	0x0239f450274f2228, 0xbb073af01d5e868b, 0xbfc80571c10e96c1, 0xd267088568222e23,
+	0x9671a3d48e80b5b0, 0x55b5d38ae193bb81, 0x693ae2d0a18b04b8, 0x5c48b4ecadd5335f,
+	0xfd743b194916a1ca, 0x2577018134be98c4, 0xe77987e83c54a4ad, 0x28e11014da33e1b9,
+	0x270cc59e226aa213, 0x71495f756d1a5f60, 0x9be853fb60afef77, 0xadc786a7f7443dbf,
+	0x0904456173b29a82, 0x58bc7a66c232bd5e, 0xf306558c673ac8b2, 0x41f639c6b6c9772a,
+	0x216defe99fda35da, 0x11640cc71c7be615, 0x93c43694565c5527, 0xea038e6246777839,
+	0xf9abf3ce5a3e2469, 0x741e768d0fd312d2, 0x0144b883ced652c6, 0xc20b5a5ba33f8552,
+	0x1ae69633c3435a9d, 0x97a28ca4088cfdec, 0x8824a43c1e96f420, 0x37612fa66eeea746,
+	0x6b4cb165f9cf0e5a, 0x43aa1c06a0abfb4a, 0x7f4dc26ff162796b, 0x6cbacc8e54ed9b0f,
+	0xa6b7ffefd2bb253e, 0x2e25bc95b0a29d4f, 0x86d6a58bdef1388c, 0xded74ac576b6f054,
+	0x8030bdbc2b45805d, 0x3c81af70e94d9289, 0x3eff6dda9e3100db, 0xb38dc39fdfcc8847,
+	0x123885528d17b87e, 0xf2da0ed240b1b642, 0x44cefadcd54bf9a9, 0x1312200e433c7ee6,
+	0x9ffcc84f3a78c748, 0xf0cd1f72248576bb, 0xec6974053638cfe4, 0x2ba7b67c0cec4e4c,
+	0xac2f4df3e5ce32ed, 0xcb33d14326ea4c11, 0xa4e9044cc77e58bc, 0x5f513293d934fcef,
+	0x5dc9645506e55444, 0x50de418f317de40a, 0x388cb31a69dde259, 0x2db4a83455820a86,
+	0x9010a91e84711ae9, 0x4df7f0b7b1498371, 0xd62a2eabc0977179, 0x22fac097aa8d5c0e,
+}
+
+var t3 = [...]uint64{
+	0xf49fcc2ff1daf39b, 0x487fd5c66ff29281, 0xe8a30667fcdca83f, 0x2c9b4be3d2fcce63,
+	0xda3ff74b93fbbbc2, 0x2fa165d2fe70ba66, 0xa103e279970e93d4, 0xbecdec77b0e45e71,
+	0xcfb41e723985e497, 0xb70aaa025ef75017, 0xd42309f03840b8e0, 0x8efc1ad035898579,
+	0x96c6920be2b2abc5, 0x66af4163375a9172, 0x2174abdcca7127fb, 0xb33ccea64a72ff41,
+	0xf04a4933083066a5, 0x8d970acdd7289af5, 0x8f96e8e031c8c25e, 0xf3fec02276875d47,
+	0xec7bf310056190dd, 0xf5adb0aebb0f1491, 0x9b50f8850fd58892, 0x4975488358b74de8,
+	0xa3354ff691531c61, 0x0702bbe481d2c6ee, 0x89fb24057deded98, 0xac3075138596e902,
+	0x1d2d3580172772ed, 0xeb738fc28e6bc30d, 0x5854ef8f63044326, 0x9e5c52325add3bbe,
+	0x90aa53cf325c4623, 0xc1d24d51349dd067, 0x2051cfeea69ea624, 0x13220f0a862e7e4f,
+	0xce39399404e04864, 0xd9c42ca47086fcb7, 0x685ad2238a03e7cc, 0x066484b2ab2ff1db,
+	0xfe9d5d70efbf79ec, 0x5b13b9dd9c481854, 0x15f0d475ed1509ad, 0x0bebcd060ec79851,
+	0xd58c6791183ab7f8, 0xd1187c5052f3eee4, 0xc95d1192e54e82ff, 0x86eea14cb9ac6ca2,
+	0x3485beb153677d5d, 0xdd191d781f8c492a, 0xf60866baa784ebf9, 0x518f643ba2d08c74,
+	0x8852e956e1087c22, 0xa768cb8dc410ae8d, 0x38047726bfec8e1a, 0xa67738b4cd3b45aa,
+	0xad16691cec0dde19, 0xc6d4319380462e07, 0xc5a5876d0ba61938, 0x16b9fa1fa58fd840,
+	0x188ab1173ca74f18, 0xabda2f98c99c021f, 0x3e0580ab134ae816, 0x5f3b05b773645abb,
+	0x2501a2be5575f2f6, 0x1b2f74004e7e8ba9, 0x1cd7580371e8d953, 0x7f6ed89562764e30,
+	0xb15926ff596f003d, 0x9f65293da8c5d6b9, 0x6ecef04dd690f84c, 0x4782275fff33af88,
+	0xe41433083f820801, 0xfd0dfe409a1af9b5, 0x4325a3342cdb396b, 0x8ae77e62b301b252,
+	0xc36f9e9f6655615a, 0x85455a2d92d32c09, 0xf2c7dea949477485, 0x63cfb4c133a39eba,
+	0x83b040cc6ebc5462, 0x3b9454c8fdb326b0, 0x56f56a9e87ffd78c, 0x2dc2940d99f42bc6,
+	0x98f7df096b096e2d, 0x19a6e01e3ad852bf, 0x42a99ccbdbd4b40b, 0xa59998af45e9c559,
+	0x366295e807d93186, 0x6b48181bfaa1f773, 0x1fec57e2157a0a1d, 0x4667446af6201ad5,
+	0xe615ebcacfb0f075, 0xb8f31f4f68290778, 0x22713ed6ce22d11e, 0x3057c1a72ec3c93b,
+	0xcb46acc37c3f1f2f, 0xdbb893fd02aaf50e, 0x331fd92e600b9fcf, 0xa498f96148ea3ad6,
+	0xa8d8426e8b6a83ea, 0xa089b274b7735cdc, 0x87f6b3731e524a11, 0x118808e5cbc96749,
+	0x9906e4c7b19bd394, 0xafed7f7e9b24a20c, 0x6509eadeeb3644a7, 0x6c1ef1d3e8ef0ede,
+	0xb9c97d43e9798fb4, 0xa2f2d784740c28a3, 0x7b8496476197566f, 0x7a5be3e6b65f069d,
+	0xf96330ed78be6f10, 0xeee60de77a076a15, 0x2b4bee4aa08b9bd0, 0x6a56a63ec7b8894e,
+	0x02121359ba34fef4, 0x4cbf99f8283703fc, 0x398071350caf30c8, 0xd0a77a89f017687a,
+	0xf1c1a9eb9e423569, 0x8c7976282dee8199, 0x5d1737a5dd1f7abd, 0x4f53433c09a9fa80,
+	0xfa8b0c53df7ca1d9, 0x3fd9dcbc886ccb77, 0xc040917ca91b4720, 0x7dd00142f9d1dcdf,
+	0x8476fc1d4f387b58, 0x23f8e7c5f3316503, 0x032a2244e7e37339, 0x5c87a5d750f5a74b,
+	0x082b4cc43698992e, 0xdf917becb858f63c, 0x3270b8fc5bf86dda, 0x10ae72bb29b5dd76,
+	0x576ac94e7700362b, 0x1ad112dac61efb8f, 0x691bc30ec5faa427, 0xff246311cc327143,
+	0x3142368e30e53206, 0x71380e31e02ca396, 0x958d5c960aad76f1, 0xf8d6f430c16da536,
+	0xc8ffd13f1be7e1d2, 0x7578ae66004ddbe1, 0x05833f01067be646, 0xbb34b5ad3bfe586d,
+	0x095f34c9a12b97f0, 0x247ab64525d60ca8, 0xdcdbc6f3017477d1, 0x4a2e14d4decad24d,
+	0xbdb5e6d9be0a1eeb, 0x2a7e70f7794301ab, 0xdef42d8a270540fd, 0x01078ec0a34c22c1,
+	0xe5de511af4c16387, 0x7ebb3a52bd9a330a, 0x77697857aa7d6435, 0x004e831603ae4c32,
+	0xe7a21020ad78e312, 0x9d41a70c6ab420f2, 0x28e06c18ea1141e6, 0xd2b28cbd984f6b28,
+	0x26b75f6c446e9d83, 0xba47568c4d418d7f, 0xd80badbfe6183d8e, 0x0e206d7f5f166044,
+	0xe258a43911cbca3e, 0x723a1746b21dc0bc, 0xc7caa854f5d7cdd3, 0x7cac32883d261d9c,
+	0x7690c26423ba942c, 0x17e55524478042b8, 0xe0be477656a2389f, 0x4d289b5e67ab2da0,
+	0x44862b9c8fbbfd31, 0xb47cc8049d141365, 0x822c1b362b91c793, 0x4eb14655fb13dfd8,
+	0x1ecbba0714e2a97b, 0x6143459d5cde5f14, 0x53a8fbf1d5f0ac89, 0x97ea04d81c5e5b00,
+	0x622181a8d4fdb3f3, 0xe9bcd341572a1208, 0x1411258643cce58a, 0x9144c5fea4c6e0a4,
+	0x0d33d06565cf620f, 0x54a48d489f219ca1, 0xc43e5eac6d63c821, 0xa9728b3a72770daf,
+	0xd7934e7b20df87ef, 0xe35503b61a3e86e5, 0xcae321fbc819d504, 0x129a50b3ac60bfa6,
+	0xcd5e68ea7e9fb6c3, 0xb01c90199483b1c7, 0x3de93cd5c295376c, 0xaed52edf2ab9ad13,
+	0x2e60f512c0a07884, 0xbc3d86a3e36210c9, 0x35269d9b163951ce, 0x0c7d6e2ad0cdb5fa,
+	0x59e86297d87f5733, 0x298ef221898db0e7, 0x55000029d1a5aa7e, 0x8bc08ae1b5061b45,
+	0xc2c31c2b6c92703a, 0x94cc596baf25ef42, 0x0a1d73db22540456, 0x04b6a0f9d9c4179a,
+	0xeffdafa2ae3d3c60, 0xf7c8075bb49496c4, 0x9cc5c7141d1cd4e3, 0x78bd1638218e5534,
+	0xb2f11568f850246a, 0xedfabcfa9502bc29, 0x796ce5f2da23051b, 0xaae128b0dc93537c,
+	0x3a493da0ee4b29ae, 0xb5df6b2c416895d7, 0xfcabbd25122d7f37, 0x70810b58105dc4b1,
+	0xe10fdd37f7882a90, 0x524dcab5518a3f5c, 0x3c9e85878451255b, 0x4029828119bd34e2,
+	0x74a05b6f5d3ceccb, 0xb610021542e13eca, 0x0ff979d12f59e2ac, 0x6037da27e4f9cc50,
+	0x5e92975a0df1847d, 0xd66de190d3e623fe, 0x5032d6b87b568048, 0x9a36b7ce8235216e,
+	0x80272a7a24f64b4a, 0x93efed8b8c6916f7, 0x37ddbff44cce1555, 0x4b95db5d4b99bd25,
+	0x92d3fda169812fc0, 0xfb1a4a9a90660bb6, 0x730c196946a4b9b2, 0x81e289aa7f49da68,
+	0x64669a0f83b1a05f, 0x27b3ff7d9644f48b, 0xcc6b615c8db675b3, 0x674f20b9bcebbe95,
+	0x6f31238275655982, 0x5ae488713e45cf05, 0xbf619f9954c21157, 0xeabac46040a8eae9,
+	0x454c6fe9f2c0c1cd, 0x419cf6496412691c, 0xd3dc3bef265b0f70, 0x6d0e60f5c3578a9e,
+}
+
+var t4 = [...]uint64{
+	0x5b0e608526323c55, 0x1a46c1a9fa1b59f5, 0xa9e245a17c4c8ffa, 0x65ca5159db2955d7,
+	0x05db0a76ce35afc2, 0x81eac77ea9113d45, 0x528ef88ab6ac0a0d, 0xa09ea253597be3ff,
+	0x430ddfb3ac48cd56, 0xc4b3a67af45ce46f, 0x4ececfd8fbe2d05e, 0x3ef56f10b39935f0,
+	0x0b22d6829cd619c6, 0x17fd460a74df2069, 0x6cf8cc8e8510ed40, 0xd6c824bf3a6ecaa7,
+	0x61243d581a817049, 0x048bacb6bbc163a2, 0xd9a38ac27d44cc32, 0x7fddff5baaf410ab,
+	0xad6d495aa804824b, 0xe1a6a74f2d8c9f94, 0xd4f7851235dee8e3, 0xfd4b7f886540d893,
+	0x247c20042aa4bfda, 0x096ea1c517d1327c, 0xd56966b4361a6685, 0x277da5c31221057d,
+	0x94d59893a43acff7, 0x64f0c51ccdc02281, 0x3d33bcc4ff6189db, 0xe005cb184ce66af1,
+	0xff5ccd1d1db99bea, 0xb0b854a7fe42980f, 0x7bd46a6a718d4b9f, 0xd10fa8cc22a5fd8c,
+	0xd31484952be4bd31, 0xc7fa975fcb243847, 0x4886ed1e5846c407, 0x28cddb791eb70b04,
+	0xc2b00be2f573417f, 0x5c9590452180f877, 0x7a6bddfff370eb00, 0xce509e38d6d9d6a4,
+	0xebeb0f00647fa702, 0x1dcc06cf76606f06, 0xe4d9f28ba286ff0a, 0xd85a305dc918c262,
+	0x475b1d8732225f54, 0x2d4fb51668ccb5fe, 0xa679b9d9d72bba20, 0x53841c0d912d43a5,
+	0x3b7eaa48bf12a4e8, 0x781e0e47f22f1ddf, 0xeff20ce60ab50973, 0x20d261d19dffb742,
+	0x16a12b03062a2e39, 0x1960eb2239650495, 0x251c16fed50eb8b8, 0x9ac0c330f826016e,
+	0xed152665953e7671, 0x02d63194a6369570, 0x5074f08394b1c987, 0x70ba598c90b25ce1,
+	0x794a15810b9742f6, 0x0d5925e9fcaf8c6c, 0x3067716cd868744e, 0x910ab077e8d7731b,
+	0x6a61bbdb5ac42f61, 0x93513efbf0851567, 0xf494724b9e83e9d5, 0xe887e1985c09648d,
+	0x34b1d3c675370cfd, 0xdc35e433bc0d255d, 0xd0aab84234131be0, 0x08042a50b48b7eaf,
+	0x9997c4ee44a3ab35, 0x829a7b49201799d0, 0x263b8307b7c54441, 0x752f95f4fd6a6ca6,
+	0x927217402c08c6e5, 0x2a8ab754a795d9ee, 0xa442f7552f72943d, 0x2c31334e19781208,
+	0x4fa98d7ceaee6291, 0x55c3862f665db309, 0xbd0610175d53b1f3, 0x46fe6cb840413f27,
+	0x3fe03792df0cfa59, 0xcfe700372eb85e8f, 0xa7be29e7adbce118, 0xe544ee5cde8431dd,
+	0x8a781b1b41f1873e, 0xa5c94c78a0d2f0e7, 0x39412e2877b60728, 0xa1265ef3afc9a62c,
+	0xbcc2770c6a2506c5, 0x3ab66dd5dce1ce12, 0xe65499d04a675b37, 0x7d8f523481bfd216,
+	0x0f6f64fcec15f389, 0x74efbe618b5b13c8, 0xacdc82b714273e1d, 0xdd40bfe003199d17,
+	0x37e99257e7e061f8, 0xfa52626904775aaa, 0x8bbbf63a463d56f9, 0xf0013f1543a26e64,
+	0xa8307e9f879ec898, 0xcc4c27a4150177cc, 0x1b432f2cca1d3348, 0xde1d1f8f9f6fa013,
+	0x606602a047a7ddd6, 0xd237ab64cc1cb2c7, 0x9b938e7225fcd1d3, 0xec4e03708e0ff476,
+	0xfeb2fbda3d03c12d, 0xae0bced2ee43889a, 0x22cb8923ebfb4f43, 0x69360d013cf7396d,
+	0x855e3602d2d4e022, 0x073805bad01f784c, 0x33e17a133852f546, 0xdf4874058ac7b638,
+	0xba92b29c678aa14a, 0x0ce89fc76cfaadcd, 0x5f9d4e0908339e34, 0xf1afe9291f5923b9,
+	0x6e3480f60f4a265f, 0xeebf3a2ab29b841c, 0xe21938a88f91b4ad, 0x57dfeff845c6d3c3,
+	0x2f006b0bf62caaf2, 0x62f479ef6f75ee78, 0x11a55ad41c8916a9, 0xf229d29084fed453,
+	0x42f1c27b16b000e6, 0x2b1f76749823c074, 0x4b76eca3c2745360, 0x8c98f463b91691bd,
+	0x14bcc93cf1ade66a, 0x8885213e6d458397, 0x8e177df0274d4711, 0xb49b73b5503f2951,
+	0x10168168c3f96b6b, 0x0e3d963b63cab0ae, 0x8dfc4b5655a1db14, 0xf789f1356e14de5c,
+	0x683e68af4e51dac1, 0xc9a84f9d8d4b0fd9, 0x3691e03f52a0f9d1, 0x5ed86e46e1878e80,
+	0x3c711a0e99d07150, 0x5a0865b20c4e9310, 0x56fbfc1fe4f0682e, 0xea8d5de3105edf9b,
+	0x71abfdb12379187a, 0x2eb99de1bee77b9c, 0x21ecc0ea33cf4523, 0x59a4d7521805c7a1,
+	0x3896f5eb56ae7c72, 0xaa638f3db18f75dc, 0x9f39358dabe9808e, 0xb7defa91c00b72ac,
+	0x6b5541fd62492d92, 0x6dc6dee8f92e4d5b, 0x353f57abc4beea7e, 0x735769d6da5690ce,
+	0x0a234aa642391484, 0xf6f9508028f80d9d, 0xb8e319a27ab3f215, 0x31ad9c1151341a4d,
+	0x773c22a57bef5805, 0x45c7561a07968633, 0xf913da9e249dbe36, 0xda652d9b78a64c68,
+	0x4c27a97f3bc334ef, 0x76621220e66b17f4, 0x967743899acd7d0b, 0xf3ee5bcae0ed6782,
+	0x409f753600c879fc, 0x06d09a39b5926db6, 0x6f83aeb0317ac588, 0x01e6ca4a86381f21,
+	0x66ff3462d19f3025, 0x72207c24ddfd3bfb, 0x4af6b6d3e2ece2eb, 0x9c994dbec7ea08de,
+	0x49ace597b09a8bc4, 0xb38c4766cf0797ba, 0x131b9373c57c2a75, 0xb1822cce61931e58,
+	0x9d7555b909ba1c0c, 0x127fafdd937d11d2, 0x29da3badc66d92e4, 0xa2c1d57154c2ecbc,
+	0x58c5134d82f6fe24, 0x1c3ae3515b62274f, 0xe907c82e01cb8126, 0xf8ed091913e37fcb,
+	0x3249d8f9c80046c9, 0x80cf9bede388fb63, 0x1881539a116cf19e, 0x5103f3f76bd52457,
+	0x15b7e6f5ae47f7a8, 0xdbd7c6ded47e9ccf, 0x44e55c410228bb1a, 0xb647d4255edb4e99,
+	0x5d11882bb8aafc30, 0xf5098bbb29d3212a, 0x8fb5ea14e90296b3, 0x677b942157dd025a,
+	0xfb58e7c0a390acb5, 0x89d3674c83bd4a01, 0x9e2da4df4bf3b93b, 0xfcc41e328cab4829,
+	0x03f38c96ba582c52, 0xcad1bdbd7fd85db2, 0xbbb442c16082ae83, 0xb95fe86ba5da9ab0,
+	0xb22e04673771a93f, 0x845358c9493152d8, 0xbe2a488697b4541e, 0x95a2dc2dd38e6966,
+	0xc02c11ac923c852b, 0x2388b1990df2a87b, 0x7c8008fa1b4f37be, 0x1f70d0c84d54e503,
+	0x5490adec7ece57d4, 0x002b3c27d9063a3a, 0x7eaea3848030a2bf, 0xc602326ded2003c0,
+	0x83a7287d69a94086, 0xc57a5fcb30f57a8a, 0xb56844e479ebe779, 0xa373b40f05dcbce9,
+	0xd71a786e88570ee2, 0x879cbacdbde8f6a0, 0x976ad1bcc164a32f, 0xab21e25e9666d78b,
+	0x901063aae5e5c33c, 0x9818b34448698d90, 0xe36487ae3e1e8abb, 0xafbdf931893bdcb4,
+	0x6345a0dc5fbbd519, 0x8628fe269b9465ca, 0x1e5d01603f9c51ec, 0x4de44006a15049b7,
+	0xbf6c70e5f776cbb1, 0x411218f2ef552bed, 0xcb0c0708705a36a3, 0xe74d14754f986044,
+	0xcd56d9430ea8280e, 0xc12591d7535f5065, 0xc83223f1720aef96, 0xc3a0396f7363a51f,
+}
diff --git a/vendor/github.com/cxmcc/tiger/tiger.go b/vendor/github.com/cxmcc/tiger/tiger.go
new file mode 100644
index 0000000..504bd66
--- /dev/null
+++ b/vendor/github.com/cxmcc/tiger/tiger.go
@@ -0,0 +1,117 @@
+// Package tiger implements the Tiger hash algorithm
+// https://github.com/cxmcc/tiger
+package tiger
+
+import "hash"
+
+// The size of a Tiger hash value in bytes
+const Size = 24
+
+// The blocksize of Tiger hash function in bytes
+const BlockSize = 64
+
+const (
+	chunk = 64
+	initA = 0x0123456789abcdef
+	initB = 0xfedcba9876543210
+	initC = 0xf096a5b4c3b2e187
+)
+
+type digest struct {
+	a      uint64
+	b      uint64
+	c      uint64
+	x      [chunk]byte
+	nx     int
+	length uint64
+	ver    int
+}
+
+func (d *digest) Reset() {
+	d.a = initA
+	d.b = initB
+	d.c = initC
+	d.nx = 0
+	d.length = 0
+}
+
+// New returns a new hash.Hash computing the Tiger hash value
+func New() hash.Hash {
+	d := new(digest)
+	d.Reset()
+	d.ver = 1
+	return d
+}
+
+// New returns a new hash.Hash computing the Tiger2 hash value
+func New2() hash.Hash {
+	d := new(digest)
+	d.Reset()
+	d.ver = 2
+	return d
+}
+
+func (d *digest) BlockSize() int {
+	return BlockSize
+}
+
+func (d *digest) Size() int {
+	return Size
+}
+
+func (d *digest) Write(p []byte) (length int, err error) {
+	length = len(p)
+	d.length += uint64(length)
+	if d.nx > 0 {
+		n := len(p)
+		if n > chunk-d.nx {
+			n = chunk - d.nx
+		}
+		copy(d.x[d.nx:d.nx+n], p[:n])
+		d.nx += n
+		if d.nx == chunk {
+			d.compress(d.x[:chunk])
+			d.nx = 0
+		}
+		p = p[n:]
+	}
+	for len(p) >= chunk {
+		d.compress(p[:chunk])
+		p = p[chunk:]
+	}
+	if len(p) > 0 {
+		d.nx = copy(d.x[:], p)
+	}
+	return
+}
+
+func (d digest) Sum(in []byte) []byte {
+	length := d.length
+	var tmp [64]byte
+	if d.ver == 1 {
+		tmp[0] = 0x01
+	} else {
+		tmp[0] = 0x80
+	}
+
+	size := length & 0x3f
+	if size < 56 {
+		d.Write(tmp[:56-size])
+	} else {
+		d.Write(tmp[:64+56-size])
+	}
+
+	length <<= 3
+	for i := uint(0); i < 8; i++ {
+		tmp[i] = byte(length >> (8 * i))
+	}
+	d.Write(tmp[:8])
+
+	for i := uint(0); i < 8; i++ {
+		tmp[i] = byte(d.a >> (8 * i))
+		tmp[i+8] = byte(d.b >> (8 * i))
+		tmp[i+16] = byte(d.c >> (8 * i))
+	}
+
+	return append(in, tmp[:24]...)
+}
diff --git a/vendor/github.com/cxmcc/tiger/tiger_test.go b/vendor/github.com/cxmcc/tiger/tiger_test.go
new file mode 100644
index 0000000..a7068aa
--- /dev/null
+++ b/vendor/github.com/cxmcc/tiger/tiger_test.go
@@ -0,0 +1,144 @@
+package tiger
+
+import (
+	"fmt"
+	"io"
+	"strings"
+	"testing"
+	"unsafe"
+)
+
+type Test struct {
+	out string
+	in  string
+}
+
+var golden = []Test{
+	{"3293ac630c13f0245f92bbb1766e16167a4e58492dde73f3", ""},
+	{"77befbef2e7ef8ab2ec8f93bf587a7fc613e247f5f247809", "a"},
+	{"2aab1484e8c158f2bfb8c5ff41b57a525129131c957b5f93", "abc"},
+	{"d981f8cb78201a950dcf3048751e441c517fca1aa55a29f6", "message digest"},
+	{"1714a472eee57d30040412bfcc55032a0b11602ff37beee9", "abcdefghijklmnopqrstuvwxyz"},
+	{"0f7bf9a19b9c58f2b7610df7e84f0ac3a71c631e7b53f78e", "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"},
+	{"8dcea680a17583ee502ba38a3c368651890ffbccdc49a8cc", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"},
+	{"1c14795529fd9f207a958f84c52f11e887fa0cabdfd91bfd", "12345678901234567890123456789012345678901234567890123456789012345678901234567890"},
+	{"cdf0990c5c6b6b0bddd63a75ed20e2d448bf44e15fde0df4", strings.Repeat("A", 1024)},
+	{"89292aee0f82842abc080c57b3aadd9ca84d66bf0cae77aa", strings.Repeat("A", 1025)},
+}
+
+func TestGolden(t *testing.T) {
+	for i := 0; i < len(golden); i++ {
+		g := golden[i]
+		c := New()
+		buf := make([]byte, len(g.in)+4)
+		for j := 0; j < 7; j++ {
+			if j < 2 {
+				io.WriteString(c, g.in)
+			} else if j == 2 {
+				io.WriteString(c, g.in[0:len(g.in)/2])
+				c.Sum(nil)
+				io.WriteString(c, g.in[len(g.in)/2:])
+			} else if j > 2 {
+				// test unaligned write
+				buf = buf[1:]
+				copy(buf, g.in)
+				c.Write(buf[:len(g.in)])
+			}
+			s := fmt.Sprintf("%x", c.Sum(nil))
+			if s != g.out {
+				t.Fatalf("tiger[%d](%s) = %s want %s", j, g.in, s, g.out)
+			}
+			c.Reset()
+		}
+	}
+}
+
+type WriteTest struct {
+	out int
+	in  string
+}
+
+var writeTestVectors = []WriteTest{
+	{0, ""},
+	{1, "A"},
+	{2, "AA"},
+	{10, strings.Repeat("A", 10)},
+	{1024, strings.Repeat("A", 1024)},
+	{1025, strings.Repeat("A", 1025)},
+	{0, ""},
+}
+
+func TestWriteReturnsCorrectSize(t *testing.T) {
+	c := New()
+	for i := 0; i < len(writeTestVectors); i++ {
+		v := writeTestVectors[i]
+		b := []byte(v.in)
+		length, err := c.Write(b[:len(v.in)])
+		if length != v.out {
+			t.Fatalf("Write() = %d want %d", length, v.out)
+		}
+		if err != nil {
+			t.Fatalf("Write(%s) failed.", v.in)
+		}
+	}
+}
+
+func ExampleNew() {
+	h := New()
+	io.WriteString(h, "It's the eye of the tiger, it's the thrill of the fight")
+	io.WriteString(h, "Rising up to the challenge of our rival!")
+	fmt.Printf("%x", h.Sum(nil))
+	// Output: a7bbad36cc17918e399ae8ee893e4595e4d24e1639fe822c
+}
+
+func ExampleNew2() {
+	h := New2()
+	io.WriteString(h, "It's the eye of the tiger, it's the thrill of the fight")
+	io.WriteString(h, "Rising up to the challenge of our rival!")
+	fmt.Printf("%x", h.Sum(nil))
+	// Output: c86695c2a639506682de2c12c2d23b61a12db78ea1ee1001
+}
+
+var bench = New()
+var buf = make([]byte, 8192+1)
+var sum = make([]byte, bench.Size())
+
+func benchmarkSize(b *testing.B, size int, unaligned bool) {
+	b.SetBytes(int64(size))
+	buf := buf
+	if unaligned {
+		if uintptr(unsafe.Pointer(&buf[0]))&(unsafe.Alignof(uint32(0))-1) == 0 {
+			buf = buf[1:]
+		}
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		bench.Reset()
+		bench.Write(buf[:size])
+		bench.Sum(sum[:0])
+	}
+}
+
+func BenchmarkHash8Bytes(b *testing.B) {
+	benchmarkSize(b, 8, false)
+}
+
+func BenchmarkHash1K(b *testing.B) {
+	benchmarkSize(b, 1024, false)
+}
+
+func BenchmarkHash8K(b *testing.B) {
+	benchmarkSize(b, 8192, false)
+}
+
+func BenchmarkHash8BytesUnaligned(b *testing.B) {
+	benchmarkSize(b, 8, true)
+}
+
+func BenchmarkHash1KUnaligned(b *testing.B) {
+	benchmarkSize(b, 1024, true)
+}
+
+func BenchmarkHash8KUnaligned(b *testing.B) {
+	benchmarkSize(b, 8192, true)
+}

From c4c6021c85e7ab830cb730f6f5fcefd9aed380f5 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Thu, 23 Nov 2017 18:23:39 +1300
Subject: [PATCH 13/32] adc: some basic protocol understanding

--HG--
branch : adc
---
 AdcProtocol.go | 143 +++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 140 insertions(+), 3 deletions(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index a99577e..5eb099a 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -1,12 +1,32 @@
 package libnmdc
 
+import (
+	"strings"
+)
+
+type adcState int
+
+const (
+	adcStateProtocol adcState = 0
+	adcStateIdentify adcState = 1
+	adcStateVerify   adcState = 2
+	adcStateNormal   adcState = 3
+	adcStateData     adcState = 4
+)
+
 type AdcProtocol struct {
-	hc *HubConnection
+	hc       *HubConnection
+	state    adcState
+	sid      string
+	supports map[string]struct{}
 }
 
 func NewAdcProtocol(hc *HubConnection) Protocol {
-	proto := AdcProtocol{}
-	proto.hc = hc
+	proto := AdcProtocol{
+		hc:       hc,
+		state:    adcStateProtocol,
+		supports: make(map[string]struct{}),
+	}
 
 	// Start logging in
 	hc.SayRaw("HSUP ADBASE ADTIGR\n")
@@ -16,6 +36,123 @@ func NewAdcProtocol(hc *HubConnection) Protocol {
 
 func (this *AdcProtocol) ProcessCommand(msg string) {
 	this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: msg})
+
+	if len(msg) == 0 {
+		return
+	}
+
+	parts := strings.Split(msg, " ")
+	switch parts[0] {
+
+	case "ISUP":
+		if !(this.state == adcStateProtocol || this.state == adcStateNormal) {
+			this.malformed(parts)
+			return
+		}
+		for _, supportflag := range parts[1:] {
+			if len(supportflag) < 2 {
+				this.malformed(parts)
+				return
+			}
+
+			if supportflag[0:2] == "AD" {
+				this.supports[supportflag[2:]] = struct{}{}
+			} else if supportflag[0:2] == "RM" {
+				delete(this.supports, supportflag[2:])
+			} else {
+				this.malformed(parts)
+				return
+			}
+		}
+		if this.state == adcStateProtocol {
+			this.state = adcStateIdentify
+		}
+
+	case "ISID":
+		if this.state != adcStateIdentify {
+			this.malformed(parts)
+			return
+		}
+		this.sid = parts[1]
+
+	case "IINF":
+		flags := make(map[string]string)
+		for _, flag := range parts[1:] {
+			if len(flag) < 2 {
+				this.malformed(parts)
+				return
+			}
+			flags[flag[0:2]] = flag[2:]
+		}
+
+		// Possibilities: User MyINFO (Normal state), or, hub telling information about itself (Identify->Normal state)
+		if (this.state == adcStateIdentify || this.state == adcStateVerify) && flags["CT"] == "32" {
+			// Hub telling information about itself
+			this.handleInfo(flags)
+
+			// Transition to state VERIFY and send our own info
+			this.hc.SayRaw("BINF " + this.escape(this.sid) + " GARBAGE") // FIXME send a real info string
+			this.state = adcStateVerify
+
+		} else if this.state == adcStateNormal {
+			// OK
+			this.handleInfo(flags)
+
+		} else {
+			this.malformed(parts)
+			return
+		}
+
+	case "IGPA":
+		//
+
+	default:
+		this.malformed(parts)
+	}
+}
+
+func (this *AdcProtocol) handleInfo(flags map[string]string) {
+	if flags["CT"] == "32" {
+
+		// IINF DEADCH++\sTest\shub VE2.12.1\s(r"[unknown]")\sRelease HI1 NIADCH++ APADCH++ CT32
+		// AP: extension 3.24 "Application and version separation in INF"
+		// HI:
+
+		// Hub properties updated
+		hubName, ok := flags["DE"]
+		if ok {
+			this.hc.HubName = this.unescape(hubName)
+			this.hc.processEvent(HubEvent{EventType: EVENT_HUBNAME_CHANGED, Nick: this.hc.HubName})
+		}
+
+	} else {
+		// User MyINFO
+		// TODO
+
+	}
+}
+
+func (this *AdcProtocol) enterNormalState() {
+	this.state = adcStateNormal
+	this.hc.processEvent(HubEvent{EventType: EVENT_CONNECTION_STATE_CHANGED, StateChange: CONNECTIONSTATE_CONNECTED})
+	this.hc.State = CONNECTIONSTATE_CONNECTED
+}
+
+func (this *AdcProtocol) malformed(parts []string) {
+	this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Ignoring malformed, unhandled, or out-of-state protocol command '" + parts[0] + "'"})
+}
+
+func (this *AdcProtocol) escape(plaintext string) string {
+	// The string "\s" escapes space, "\n" newline and "\\" backslash. This version of the protocol reserves all other escapes for future use; any message containing unknown escapes must be discarded.
+	v1 := strings.Replace(plaintext, `\`, `\\`, -1)
+	v2 := strings.Replace(v1, "\n", `\n`, -1)
+	return strings.Replace(v2, " ", `\s`, -1)
+}
+
+func (this *AdcProtocol) unescape(encoded string) string {
+	v1 := strings.Replace(encoded, `\s`, " ", -1)
+	v2 := strings.Replace(v1, `\n`, "\n", -1)
+	return strings.Replace(v2, `\\`, `\`, -1)
 }
 
 func (this *AdcProtocol) SayPublic(msg string) {

From b784c34d4df5596583940692919f9e9f3befb887 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sat, 25 Nov 2017 13:45:10 +1300
Subject: [PATCH 14/32] fix tests post-refactor

--HG--
branch : adc
---
 Example_test.go                          | 16 ++++++++--------
 UserInfo_test.go => NmdcProtocol_test.go | 17 +++++++++--------
 2 files changed, 17 insertions(+), 16 deletions(-)
 rename UserInfo_test.go => NmdcProtocol_test.go (92%)

diff --git a/Example_test.go b/Example_test.go
index 1bc54d3..9f98b4c 100644
--- a/Example_test.go
+++ b/Example_test.go
@@ -7,12 +7,13 @@ import (
 func ExampleHubConnectionOptions_Connect() {
 	opts := HubConnectionOptions{
 		Address: "127.0.0.1",
-		Self:    *NewUserInfo("slowpoke9"),
+		Self:    NewUserInfo("slowpoke9"),
 	}
-	hub := opts.Connect()
 
-	for {
-		event := <-hub.OnEvent
+	events := make(chan HubEvent, 0)
+	hub := ConnectAsync(&opts, events)
+
+	for event := range events {
 		switch event.EventType {
 		case EVENT_CONNECTION_STATE_CHANGED:
 			fmt.Printf("Connection -- %s (%s)\n", event.StateChange, event.Message)
@@ -49,10 +50,9 @@ func ExampleHubConnectionOptions_ConnectSync() {
 	}
 
 	opts := HubConnectionOptions{
-		Address:     "127.0.0.1",
-		Self:        *NewUserInfo("slowpoke9"),
-		OnEventSync: cb,
+		Address: "127.0.0.1",
+		Self:    NewUserInfo("slowpoke9"),
 	}
 
-	opts.ConnectSync() // blocking
+	ConnectSync(&opts, cb) // blocking
 }
diff --git a/UserInfo_test.go b/NmdcProtocol_test.go
similarity index 92%
rename from UserInfo_test.go
rename to NmdcProtocol_test.go
index 72b4c9a..0b513c5 100644
--- a/UserInfo_test.go
+++ b/NmdcProtocol_test.go
@@ -4,13 +4,15 @@ import (
 	"testing"
 )
 
-type myInfoTestPair struct {
-	in     string
-	expect UserInfo
-}
-
 func TestMyINFOParse(t *testing.T) {
 
+	np := NewNmdcProtocol(nil).(*NmdcProtocol)
+
+	type myInfoTestPair struct {
+		in     string
+		expect UserInfo
+	}
+
 	cases := []myInfoTestPair{
 
 		myInfoTestPair{
@@ -71,15 +73,14 @@ func TestMyINFOParse(t *testing.T) {
 
 	for _, v := range cases {
 
-		got := UserInfo{}
-		err := got.fromMyINFO(v.in)
+		got, err := np.parseMyINFO(v.in)
 
 		if err != nil {
 			t.Errorf("MyINFO parse warning (%s)", err.Error())
 			continue
 		}
 
-		if got != v.expect {
+		if *got != v.expect {
 			t.Errorf("MyINFO parse failure\nExpected:\n%+v\nGot:\n%+v\n", v.expect, got)
 			continue
 		}

From da80ee18611b399accc445411a699f9b174719fa Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sat, 25 Nov 2017 13:45:26 +1300
Subject: [PATCH 15/32] add tth package and test cases (currently
 non-functional)

--HG--
branch : adc
---
 tth.go      | 40 ++++++++++++++++++++++++++++++++++++++++
 tth_test.go | 25 +++++++++++++++++++++++++
 2 files changed, 65 insertions(+)
 create mode 100644 tth.go
 create mode 100644 tth_test.go

diff --git a/tth.go b/tth.go
new file mode 100644
index 0000000..b7c3892
--- /dev/null
+++ b/tth.go
@@ -0,0 +1,40 @@
+package libnmdc
+
+import (
+	"encoding/base32"
+	"errors"
+
+	"github.com/cxmcc/tiger"
+)
+
+func tth(input []byte) (string, error) {
+	if len(input) > 1024 {
+		return "", errors.New("TTH content exceeded 1024 bytes")
+	}
+
+	leafHash := tiger.New()
+
+	//buff := make([]byte, 1024)
+	//leafHash.Write([]byte("\x00"))
+	//copy(buff[1:], []byte(input))
+	//leafHash.Write(buff)
+	//fmt.Printf("%#v\n", buff)
+
+	leafHash.Write([]byte("\x00" + string(input)))
+	leafHashBytes := leafHash.Sum(nil)
+
+	rootHash := tiger.New()
+	//rootHash.Write([]byte("\x01"))
+	//rootHash.Write(leafHashBytes)
+	rootHash.Write([]byte("\x01" + string(leafHashBytes)))
+	rootHashBytes := rootHash.Sum(nil)
+
+	/*
+	   * The Tiger Hash function, modified to prepend the specified byte to the input
+	    * data. This is useful for the THEX algorithm which prepends a 0x00 to leaf
+	    * nodes and 0x01 to the hash nodes.
+	    **/
+
+	// Definitely StdEncoding
+	return base32.StdEncoding.EncodeToString(rootHashBytes), nil
+}
diff --git a/tth_test.go b/tth_test.go
new file mode 100644
index 0000000..e4be70c
--- /dev/null
+++ b/tth_test.go
@@ -0,0 +1,25 @@
+package libnmdc
+
+import (
+	"testing"
+)
+
+func TestTTH(t *testing.T) {
+
+	// echo -n 'hello world' | tthsum
+	testCases := [][2]string{
+		[2]string{"hello world", "ZIIVRZDR2FD3W4KKNMNYUU3765LPPK7BWY64CHI"},
+		[2]string{"", "LWPNACQDBZRYXW3VHJVCJ64QBZNGHOHHHZWCLNQ"},
+	}
+
+	for _, testCase := range testCases {
+		input, expected := testCase[0], testCase[1]
+		result, err := tth([]byte(input))
+		if err != nil {
+			t.Fatalf("Error getting TTH for '%s': %s", input, err.Error())
+		}
+		if result != expected {
+			t.Fatalf("Wrong TTH for '%s' (got '%s' expected '%s')", input, result, expected)
+		}
+	}
+}

From 881286df39331948fb600ec937458e3a8f4f829b Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sat, 25 Nov 2017 14:22:38 +1300
Subject: [PATCH 16/32] tth: expand test coverage

--HG--
branch : adc
---
 tth_test.go | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/tth_test.go b/tth_test.go
index e4be70c..1756872 100644
--- a/tth_test.go
+++ b/tth_test.go
@@ -1,6 +1,7 @@
 package libnmdc
 
 import (
+	"strings"
 	"testing"
 )
 
@@ -10,16 +11,25 @@ func TestTTH(t *testing.T) {
 	testCases := [][2]string{
 		[2]string{"hello world", "ZIIVRZDR2FD3W4KKNMNYUU3765LPPK7BWY64CHI"},
 		[2]string{"", "LWPNACQDBZRYXW3VHJVCJ64QBZNGHOHHHZWCLNQ"},
+		[2]string{"\x00", "VK54ZIEEVTWNAUI5D5RDFIL37LX2IQNSTAXFKSA"},
+		[2]string{strings.Repeat("A", 1024), "L66Q4YVNAFWVS23X2HJIRA5ZJ7WXR3F26RSASFA"},
+	}
+
+	short := func(s string) string {
+		if len(s) > 15 {
+			return s[0:15] + "..."
+		}
+		return s
 	}
 
 	for _, testCase := range testCases {
 		input, expected := testCase[0], testCase[1]
 		result, err := tth([]byte(input))
 		if err != nil {
-			t.Fatalf("Error getting TTH for '%s': %s", input, err.Error())
+			t.Fatalf("Error getting TTH for '%s': %s", short(input), err.Error())
 		}
 		if result != expected {
-			t.Fatalf("Wrong TTH for '%s' (got '%s' expected '%s')", input, result, expected)
+			t.Fatalf("Wrong TTH for '%s' (got '%s' expected '%s')", short(input), result, expected)
 		}
 	}
 }

From 95cd5c85f09e79b1d6cecdac7d5180c3483a05f0 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sat, 25 Nov 2017 14:25:17 +1300
Subject: [PATCH 17/32] tth: working

--HG--
branch : adc
---
 tth.go      | 36 +++++++++++++-----------------------
 tth_test.go |  2 +-
 2 files changed, 14 insertions(+), 24 deletions(-)

diff --git a/tth.go b/tth.go
index b7c3892..8a245ec 100644
--- a/tth.go
+++ b/tth.go
@@ -3,38 +3,28 @@ package libnmdc
 import (
 	"encoding/base32"
 	"errors"
+	"strings"
 
 	"github.com/cxmcc/tiger"
 )
 
-func tth(input []byte) (string, error) {
+// TTH returns the TTH hash of a string. This is a rudimentary implementation
+// that only supports content up to 1024 bytes in length.
+func TTH(input string) (string, error) {
+
+	// Short segments do not need to be padded.
+	// Content above 1024 bytes needs tree handling (0x00 prefix for leaf nodes,
+	// 0x01 prefix for hash nodes) but for content less than 1024 bytes, just
+	// return the leaf hash
+	// @ref http://adc.sourceforge.net/draft-jchapweske-thex-02.html
 	if len(input) > 1024 {
 		return "", errors.New("TTH content exceeded 1024 bytes")
 	}
 
+	// Single leaf hash only
 	leafHash := tiger.New()
-
-	//buff := make([]byte, 1024)
-	//leafHash.Write([]byte("\x00"))
-	//copy(buff[1:], []byte(input))
-	//leafHash.Write(buff)
-	//fmt.Printf("%#v\n", buff)
-
-	leafHash.Write([]byte("\x00" + string(input)))
+	leafHash.Write([]byte("\x00" + input))
 	leafHashBytes := leafHash.Sum(nil)
 
-	rootHash := tiger.New()
-	//rootHash.Write([]byte("\x01"))
-	//rootHash.Write(leafHashBytes)
-	rootHash.Write([]byte("\x01" + string(leafHashBytes)))
-	rootHashBytes := rootHash.Sum(nil)
-
-	/*
-	   * The Tiger Hash function, modified to prepend the specified byte to the input
-	    * data. This is useful for the THEX algorithm which prepends a 0x00 to leaf
-	    * nodes and 0x01 to the hash nodes.
-	    **/
-
-	// Definitely StdEncoding
-	return base32.StdEncoding.EncodeToString(rootHashBytes), nil
+	return strings.TrimRight(base32.StdEncoding.EncodeToString(leafHashBytes), "="), nil
 }
diff --git a/tth_test.go b/tth_test.go
index 1756872..ca41ad3 100644
--- a/tth_test.go
+++ b/tth_test.go
@@ -24,7 +24,7 @@ func TestTTH(t *testing.T) {
 
 	for _, testCase := range testCases {
 		input, expected := testCase[0], testCase[1]
-		result, err := tth([]byte(input))
+		result, err := TTH(input)
 		if err != nil {
 			t.Fatalf("Error getting TTH for '%s': %s", short(input), err.Error())
 		}

From aabaa128c4aa4784ef7ba9f0e41f038b2c5e340e Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 13:29:09 +1300
Subject: [PATCH 18/32] move some UserInfo properties into separate adc/nmdc
 sub structs

--HG--
branch : adc
---
 NmdcProtocol_test.go | 28 ++++++++++++++++++----------
 UserInfo.go          | 30 ++++++++++++++++++++++++++----
 2 files changed, 44 insertions(+), 14 deletions(-)

diff --git a/NmdcProtocol_test.go b/NmdcProtocol_test.go
index 0b513c5..70c4f34 100644
--- a/NmdcProtocol_test.go
+++ b/NmdcProtocol_test.go
@@ -24,23 +24,27 @@ func TestMyINFOParse(t *testing.T) {
 				ClientVersion:    "1.4.3",
 				Email:            "xyz@example.com",
 				ShareSize:        53054999578,
-				ConnectionMode:   CONNECTIONMODE_PASSIVE,
 				Flag:             FLAG_NORMAL,
 				Slots:            1,
-				Speed:            "0.0",
 				HubsUnregistered: 9,
 				HubsRegistered:   0,
 				HubsOperator:     2,
+				UserInfo_NMDCOnly: UserInfo_NMDCOnly{
+					ConnectionMode: CONNECTIONMODE_PASSIVE,
+					Speed:          "0.0",
+				},
 			},
 		},
 		myInfoTestPair{
 			in: "$ALL ixxxxxxx0 $P$10A$$0$",
 			expect: UserInfo{
-				Nick:           "ixxxxxxx0",
-				ClientVersion:  "0", // Auto-inserted by the parser for short-format MyINFO strings
-				ConnectionMode: CONNECTIONMODE_PASSIVE,
-				Flag:           UserFlag(rune('A')),
-				Speed:          "1",
+				Nick:          "ixxxxxxx0",
+				ClientVersion: "0", // Auto-inserted by the parser for short-format MyINFO strings
+				Flag:          UserFlag(rune('A')),
+				UserInfo_NMDCOnly: UserInfo_NMDCOnly{
+					ConnectionMode: CONNECTIONMODE_PASSIVE,
+					Speed:          "1",
+				},
 			},
 		},
 		myInfoTestPair{
@@ -49,11 +53,13 @@ func TestMyINFOParse(t *testing.T) {
 				Nick:             "SXXXX_XXXXXXR",
 				ClientTag:        "ncdc",
 				ClientVersion:    "1.19.1-12-g5561",
-				ConnectionMode:   CONNECTIONMODE_PASSIVE,
 				Flag:             UserFlag(rune('Q')),
 				Slots:            10,
-				Speed:            "0.00",
 				HubsUnregistered: 1,
+				UserInfo_NMDCOnly: UserInfo_NMDCOnly{
+					ConnectionMode: CONNECTIONMODE_PASSIVE,
+					Speed:          "0.00",
+				},
 			},
 		},
 		myInfoTestPair{
@@ -63,10 +69,12 @@ func TestMyINFOParse(t *testing.T) {
 				Description:      "desccccc",
 				ClientTag:        "HexChat",
 				ClientVersion:    "2.12.1",
-				ConnectionMode:   CONNECTIONMODE_PASSIVE,
 				Flag:             UserFlag(rune('p')),
 				HubsUnregistered: 1,
 				Slots:            0,
+				UserInfo_NMDCOnly: UserInfo_NMDCOnly{
+					ConnectionMode: CONNECTIONMODE_PASSIVE,
+				},
 			},
 		},
 	}
diff --git a/UserInfo.go b/UserInfo.go
index cc51f44..f1690cd 100644
--- a/UserInfo.go
+++ b/UserInfo.go
@@ -8,21 +8,43 @@ type UserInfo struct {
 	ClientVersion    string
 	Email            string
 	ShareSize        uint64
-	ConnectionMode   ConnectionMode
 	Flag             UserFlag
 	Slots            uint64
-	Speed            string
 	HubsUnregistered uint64
 	HubsRegistered   uint64
 	HubsOperator     uint64
 	IsOperator       bool
-	IPAddress        string
+
+	UserInfo_NMDCOnly
+	UserInfo_ADCOnly
+}
+
+type UserInfo_NMDCOnly struct {
+	Speed          string
+	IPAddress      string
+	ConnectionMode ConnectionMode
+}
+
+type UserInfo_ADCOnly struct {
+	SharedFiles      uint64
+	UploadSpeedBps   uint64
+	DownloadSpeedBps uint64
+	IsBot            bool
+	IsRegistered     bool
+	IsSuperUser      bool
+	IsHubOwner       bool
+	IPv4Address      string // Passive <==> these fields are not set
+	IPv6Address      string
+	IPv4UDPPort      uint
+	IPv6UDPPort      uint
 }
 
 func NewUserInfo(username string) *UserInfo {
 	return &UserInfo{
 		Nick:             username,
-		ConnectionMode:   CONNECTIONMODE_PASSIVE,
 		HubsUnregistered: 1,
+		UserInfo_NMDCOnly: UserInfo_NMDCOnly{
+			ConnectionMode: CONNECTIONMODE_PASSIVE,
+		},
 	}
 }

From ee91ca71c41a3e35827d322152e048ebd2c533d0 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 13:29:32 +1300
Subject: [PATCH 19/32] tth: redesign api surface

--HG--
branch : adc
---
 tth.go      | 19 ++++++++++++-------
 tth_test.go |  3 ++-
 2 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/tth.go b/tth.go
index 8a245ec..fe2c175 100644
--- a/tth.go
+++ b/tth.go
@@ -8,9 +8,16 @@ import (
 	"github.com/cxmcc/tiger"
 )
 
-// TTH returns the TTH hash of a string. This is a rudimentary implementation
-// that only supports content up to 1024 bytes in length.
-func TTH(input string) (string, error) {
+// Base32 encodes the input slice in BASE32 string format without any trailing
+// padding equals characters.
+func Base32(input []byte) string {
+	return strings.TrimRight(base32.StdEncoding.EncodeToString(input), "=")
+}
+
+// TTH returns the TTH hash of a string in raw byte format. Use the Base32()
+// function to convert it to normal string format.
+// This is a basic implementation that only supports content up to 1024 bytes in length.
+func TTH(input string) ([]byte, error) {
 
 	// Short segments do not need to be padded.
 	// Content above 1024 bytes needs tree handling (0x00 prefix for leaf nodes,
@@ -18,13 +25,11 @@ func TTH(input string) (string, error) {
 	// return the leaf hash
 	// @ref http://adc.sourceforge.net/draft-jchapweske-thex-02.html
 	if len(input) > 1024 {
-		return "", errors.New("TTH content exceeded 1024 bytes")
+		return nil, errors.New("TTH content exceeded 1024 bytes")
 	}
 
 	// Single leaf hash only
 	leafHash := tiger.New()
 	leafHash.Write([]byte("\x00" + input))
-	leafHashBytes := leafHash.Sum(nil)
-
-	return strings.TrimRight(base32.StdEncoding.EncodeToString(leafHashBytes), "="), nil
+	return leafHash.Sum(nil), nil
 }
diff --git a/tth_test.go b/tth_test.go
index ca41ad3..817c61e 100644
--- a/tth_test.go
+++ b/tth_test.go
@@ -28,7 +28,8 @@ func TestTTH(t *testing.T) {
 		if err != nil {
 			t.Fatalf("Error getting TTH for '%s': %s", short(input), err.Error())
 		}
-		if result != expected {
+
+		if Base32(result) != expected {
 			t.Fatalf("Wrong TTH for '%s' (got '%s' expected '%s')", short(input), result, expected)
 		}
 	}

From a3963f196a0cb83213784873590e7ab2e1c56cc1 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 13:29:44 +1300
Subject: [PATCH 20/32] adc: PID management

--HG--
branch : adc
---
 HubConnectionOptions.go | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/HubConnectionOptions.go b/HubConnectionOptions.go
index c990aaa..1111788 100644
--- a/HubConnectionOptions.go
+++ b/HubConnectionOptions.go
@@ -1,11 +1,30 @@
 package libnmdc
 
+import (
+	"crypto/rand"
+)
+
 type HubConnectionOptions struct {
 	Address           HubAddress
 	SkipVerifyTLS     bool // using a negative verb, because bools default to false
 	SkipAutoReconnect bool // as above
 	Self              *UserInfo
 	NickPassword      string
+	AdcPID            string // blank: autogenerate
+}
+
+func NewPID() string {
+	pidBytes := make([]byte, 24)
+	n, err := rand.Read(pidBytes)
+	if err != nil {
+		panic(err) // Insufficient cryptographic randomness
+	}
+
+	if n != 24 {
+		panic("Insufficient cryptographic randomness")
+	}
+
+	return Base32(pidBytes)
 }
 
 func (this *HubConnectionOptions) prepareConnection() *HubConnection {
@@ -19,6 +38,10 @@ func (this *HubConnectionOptions) prepareConnection() *HubConnection {
 		this.Self.ClientVersion = "0"
 	}
 
+	if this.AdcPID == "" {
+		this.AdcPID = NewPID()
+	}
+
 	hc := HubConnection{
 		Hco:     this,
 		HubName: DEFAULT_HUB_NAME,

From 3dc4ede0d8cb0272f9e8dd1a74c0d1bb0ff97abf Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 13:30:19 +1300
Subject: [PATCH 21/32] adc: PID/CID, info generation+parsing, decode adc error
 messages

--HG--
branch : adc
---
 AdcProtocol.go | 217 +++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 212 insertions(+), 5 deletions(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index 5eb099a..7deef6c 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -1,6 +1,10 @@
 package libnmdc
 
 import (
+	"encoding/base32"
+	"fmt"
+	"regexp"
+	"strconv"
 	"strings"
 )
 
@@ -15,12 +19,17 @@ const (
 )
 
 type AdcProtocol struct {
-	hc       *HubConnection
-	state    adcState
-	sid      string
-	supports map[string]struct{}
+	hc            *HubConnection
+	state         adcState
+	sid, pid, cid string // all in base32 encoding
+	supports      map[string]struct{}
 }
 
+const (
+	// extra extensions that aren't flagged in SUPPORTS
+	adcSeparateApVe string = "SEPARATE_AP_VE" // we invented this string
+)
+
 func NewAdcProtocol(hc *HubConnection) Protocol {
 	proto := AdcProtocol{
 		hc:       hc,
@@ -28,12 +37,53 @@ func NewAdcProtocol(hc *HubConnection) Protocol {
 		supports: make(map[string]struct{}),
 	}
 
+	rxPid := regexp.MustCompile("^[A-Z2-7]{39}$")
+	if !rxPid.MatchString(hc.Hco.AdcPID) {
+		hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN, Message: "Invalid custom PID, regenerating"})
+		hc.Hco.AdcPID = NewPID()
+	}
+
+	pid_base32 := hc.Hco.AdcPID
+	cid_base32, err := proto.pid2cid(pid_base32)
+	if err != nil {
+		panic(err)
+	}
+
+	proto.cid = cid_base32
+	proto.pid = pid_base32
+
 	// Start logging in
 	hc.SayRaw("HSUP ADBASE ADTIGR\n")
 
 	return &proto
 }
 
+func (this *AdcProtocol) pid2cid(pid_base32 string) (string, error) {
+
+	/*
+		Generate random data and store it in PID_raw, then;
+		PID = Base32( PID_raw )
+		CID = Base32( Hash( PID_raw ) )
+
+		For GPA/PAS, assuming that '12345' is the random data supplied in GPA, then;
+		PAS = Base32( Hash( password + '12345' ) )
+	*/
+
+	pid_raw, err := base32.StdEncoding.DecodeString(pid_base32 + "=")
+	if err != nil {
+		return "", err
+	}
+
+	cid_raw, err := TTH(string(pid_raw))
+	if err != nil {
+		return "", err
+	}
+
+	cid_base32 := Base32(cid_raw)
+
+	return cid_base32, nil
+}
+
 func (this *AdcProtocol) ProcessCommand(msg string) {
 	this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: msg})
 
@@ -91,7 +141,7 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 			this.handleInfo(flags)
 
 			// Transition to state VERIFY and send our own info
-			this.hc.SayRaw("BINF " + this.escape(this.sid) + " GARBAGE") // FIXME send a real info string
+			this.hc.SayRaw("BINF " + this.escape(this.sid) + " " + this.ourINFO(true) + "\n")
 			this.state = adcStateVerify
 
 		} else if this.state == adcStateNormal {
@@ -103,6 +153,17 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 			return
 		}
 
+	case "ISTA":
+		// Message from the hub
+		if len(parts) < 3 {
+			this.malformed(parts)
+			return
+		}
+
+		code, _ := strconv.Atoi(parts[1])
+		msg := this.unescape(parts[2])
+		this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_HUB, Message: this.ErrorMessage(code, msg)})
+
 	case "IGPA":
 		//
 
@@ -111,6 +172,62 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 	}
 }
 
+func (this *AdcProtocol) infoFlagsFor(u *UserInfo) map[string]string {
+	parts := map[string]string{
+		"NI": u.Nick,
+		"SS": fmt.Sprintf("%d", u.ShareSize),
+		"SF": fmt.Sprintf("%d", u.SharedFiles),
+		"US": fmt.Sprintf("%d", u.UploadSpeedBps),
+		"DS": fmt.Sprintf("%d", u.DownloadSpeedBps),
+		"SL": fmt.Sprintf("%d", u.Slots),
+		"FS": fmt.Sprintf("%d", u.Slots), // Free slots - NOT IN ADC DOCUMENTATION
+		"HN": fmt.Sprintf("%d", u.HubsUnregistered),
+		"HR": fmt.Sprintf("%d", u.HubsRegistered),
+		"HO": fmt.Sprintf("%d", u.HubsOperator),
+	}
+
+	if _, ok := this.supports[adcSeparateApVe]; ok {
+		parts["AP"] = u.ClientTag
+		parts["VE"] = u.ClientVersion
+	} else {
+		parts["VE"] = fmt.Sprintf("%s %s", u.ClientVersion, u.ClientTag)
+	}
+
+	ct := 0 // 1=bot, 2=registered user, 4=operator, 8=super user, 16=hub owner, 32=hub
+	if u.IsBot {
+		ct |= 1
+	}
+	if u.IsRegistered {
+		ct |= 2
+	}
+	if u.IsOperator {
+		ct |= 4
+	}
+	if u.IsSuperUser {
+		ct |= 8
+	}
+	if u.IsHubOwner {
+		ct |= 16
+	}
+	parts["CT"] = fmt.Sprintf("%d", ct)
+
+	return parts
+}
+
+func (this *AdcProtocol) ourINFO(includePid bool) string {
+	parts := this.infoFlagsFor(this.hc.Hco.Self)
+	parts["ID"] = this.cid
+	if includePid {
+		parts["PD"] = this.pid
+	}
+
+	ret := ""
+	for k, v := range parts {
+		ret += " " + k + this.escape(v)
+	}
+	return ret[1:]
+}
+
 func (this *AdcProtocol) handleInfo(flags map[string]string) {
 	if flags["CT"] == "32" {
 
@@ -119,6 +236,12 @@ func (this *AdcProtocol) handleInfo(flags map[string]string) {
 		// HI:
 
 		// Hub properties updated
+
+		// Special SUPPORT that is only indicated in IINF
+		if _, ok := flags["AP"]; ok {
+			this.supports[adcSeparateApVe] = struct{}{}
+		}
+
 		hubName, ok := flags["DE"]
 		if ok {
 			this.hc.HubName = this.unescape(hubName)
@@ -164,3 +287,87 @@ func (this *AdcProtocol) SayPrivate(user, message string) {
 func (this *AdcProtocol) ProtoMessageSeparator() string {
 	return "\n"
 }
+
+func (this *AdcProtocol) ErrorMessage(code int, msg string) string {
+	severity := code / 100
+	category := (code % 100) / 10
+	cat_sub := (code % 100)
+
+	formatSeverity := func(severity int) string {
+		switch severity {
+		case 0:
+			return "OK"
+		case 1:
+			return "Warning"
+		case 2:
+			return "Error"
+		default:
+			return ""
+		}
+	}
+
+	formatCategory := func(category int) string {
+		switch category {
+		case 0:
+			return ""
+		case 1:
+			return "Hub not accepting users"
+		case 2:
+			return "Login failed"
+		case 3:
+			return "Access denied"
+		case 4:
+			return "Protocol error"
+		case 5:
+			return "Transfer error"
+		default:
+			return ""
+		}
+	}
+
+	formatCatSub := func(cat_sub int) string {
+		switch cat_sub {
+		case 11:
+			return "Hub is full"
+		case 12:
+			return "Hub is disabled"
+		case 21:
+			return "Invalid nick"
+		case 22:
+			return "Nick is already in use"
+		case 23:
+			return "Invalid password"
+		case 24:
+			return "CID already connected"
+		case 25:
+			return "Access denied"
+		case 26:
+			return "Registered users only"
+		case 27:
+			return "Invalid PID"
+		case 31:
+			return "Permanently banned"
+		case 32:
+			return "Temporarily banned"
+		default:
+			return ""
+		}
+	}
+
+	parts := make([]string, 0, 4)
+	if fs := formatSeverity(severity); len(fs) > 0 {
+		parts = append(parts, fs)
+	}
+	if fc := formatCategory(category); len(fc) > 0 {
+		parts = append(parts, fc)
+	}
+	if fcs := formatCatSub(cat_sub); len(fcs) > 0 {
+		parts = append(parts, fcs)
+	}
+	if len(msg) > 0 {
+		parts = append(parts, msg)
+	}
+
+	return strings.Join(parts, ": ") + fmt.Sprintf(" (code %d)", code)
+
+}

From b1c6a5f56a99f263d726428a06f151ecc51cca0a Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 14:01:46 +1300
Subject: [PATCH 22/32] adc: working PID/CID login

--HG--
branch : adc
---
 AdcProtocol.go | 17 ++---------------
 tth.go         |  6 ++++++
 2 files changed, 8 insertions(+), 15 deletions(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index 7deef6c..6e661c1 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -60,32 +60,18 @@ func NewAdcProtocol(hc *HubConnection) Protocol {
 
 func (this *AdcProtocol) pid2cid(pid_base32 string) (string, error) {
 
-	/*
-		Generate random data and store it in PID_raw, then;
-		PID = Base32( PID_raw )
-		CID = Base32( Hash( PID_raw ) )
-
-		For GPA/PAS, assuming that '12345' is the random data supplied in GPA, then;
-		PAS = Base32( Hash( password + '12345' ) )
-	*/
-
 	pid_raw, err := base32.StdEncoding.DecodeString(pid_base32 + "=")
 	if err != nil {
 		return "", err
 	}
 
-	cid_raw, err := TTH(string(pid_raw))
-	if err != nil {
-		return "", err
-	}
-
+	cid_raw := Tiger(string(pid_raw))
 	cid_base32 := Base32(cid_raw)
 
 	return cid_base32, nil
 }
 
 func (this *AdcProtocol) ProcessCommand(msg string) {
-	this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: msg})
 
 	if len(msg) == 0 {
 		return
@@ -168,6 +154,7 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 		//
 
 	default:
+		this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: msg})
 		this.malformed(parts)
 	}
 }
diff --git a/tth.go b/tth.go
index fe2c175..612bef4 100644
--- a/tth.go
+++ b/tth.go
@@ -33,3 +33,9 @@ func TTH(input string) ([]byte, error) {
 	leafHash.Write([]byte("\x00" + input))
 	return leafHash.Sum(nil), nil
 }
+
+func Tiger(input string) []byte {
+	leafHash := tiger.New()
+	leafHash.Write([]byte(input))
+	return leafHash.Sum(nil)
+}

From a5b773952c10feb3cbcefb6ad4a19100fbb87228 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 14:55:30 +1300
Subject: [PATCH 23/32] adc: parse user info messages, user<-->sid mapping

--HG--
branch : adc
---
 AdcProtocol.go          | 233 ++++++++++++++++++++++++++++++++++------
 HubConnection.go        |   1 +
 HubConnectionOptions.go |   9 +-
 UserInfo.go             |   7 +-
 4 files changed, 211 insertions(+), 39 deletions(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index 6e661c1..ce50d86 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -77,6 +77,7 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 		return
 	}
 
+	this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: msg})
 	parts := strings.Split(msg, " ")
 	switch parts[0] {
 
@@ -112,33 +113,104 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 		this.sid = parts[1]
 
 	case "IINF":
-		flags := make(map[string]string)
-		for _, flag := range parts[1:] {
-			if len(flag) < 2 {
-				this.malformed(parts)
-				return
-			}
-			flags[flag[0:2]] = flag[2:]
+		// Hub telling information about itself
+
+		flags, err := this.parts2flags(parts[1:])
+		if err != nil {
+			this.logError(err)
+			return
 		}
 
-		// Possibilities: User MyINFO (Normal state), or, hub telling information about itself (Identify->Normal state)
-		if (this.state == adcStateIdentify || this.state == adcStateVerify) && flags["CT"] == "32" {
-			// Hub telling information about itself
-			this.handleInfo(flags)
+		if flags["CT"] != "32" {
+			this.malformed(parts)
+			return
+		}
 
+		err = this.handleHubInfo(flags)
+		if err != nil {
+			this.logError(err)
+			return
+		}
+
+		if this.state == adcStateIdentify {
 			// Transition to state VERIFY and send our own info
 			this.hc.SayRaw("BINF " + this.escape(this.sid) + " " + this.ourINFO(true) + "\n")
 			this.state = adcStateVerify
 
-		} else if this.state == adcStateNormal {
+		} else if this.state == adcStateNormal || this.state == adcStateVerify {
 			// OK
-			this.handleInfo(flags)
 
 		} else {
+			// Bad state to be in
 			this.malformed(parts)
 			return
 		}
 
+	case "BINF":
+		if this.state != adcStateNormal {
+			this.enterNormalState() // successful login
+		}
+
+		sid := parts[1]
+		flags, err := this.parts2flags(parts[2:])
+		if err != nil {
+			this.logError(err)
+			return
+		}
+
+		uinfo, err := this.handleUserInfo(flags)
+		if err != nil {
+			this.logError(err)
+			return
+		}
+
+		// Log this user in, and associate this SID with this user
+		this.hc.usersMut.Lock()
+		defer this.hc.usersMut.Unlock()
+
+		newNick := uinfo.Nick
+
+		oldNick, sidExists := this.hc.userSIDs[sid]
+
+		handleNewUser := func() {
+			// Install this SID as pointing to this nick
+			this.hc.userSIDs[sid] = uinfo.Nick
+
+			// Check if this nick was in use by any other SID already
+			for otherSid, otherSidNick := range this.hc.userSIDs {
+				if otherSidNick == newNick && otherSid != sid {
+					this.hc.processEvent(HubEvent{
+						EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN,
+						Message:   fmt.Sprintf("Hub connection corrupted (duplicate SIDs '%s' and '%s' for nick '%s'), disconnecting", sid, otherSid, newNick),
+					})
+					this.hc.Disconnect()
+					return
+				}
+			}
+
+			// Notifications
+			this.hc.users[newNick] = *uinfo
+			this.hc.processEvent(HubEvent{EventType: EVENT_USER_JOINED, Nick: newNick})
+		}
+
+		if sidExists && oldNick != newNick {
+			// Nick change = delete all trace of this user first, treat as new
+
+			delete(this.hc.users, oldNick)
+			delete(this.hc.userSIDs, sid)
+			this.hc.processEvent(HubEvent{EventType: EVENT_USER_PART, Nick: oldNick})
+			handleNewUser()
+
+		} else if sidExists && oldNick == newNick {
+			// Updating existing user
+			this.hc.users[newNick] = *uinfo
+			this.hc.processEvent(HubEvent{EventType: EVENT_USER_UPDATED_INFO, Nick: newNick})
+
+		} else if !sidExists {
+			// User joined
+			handleNewUser()
+		}
+
 	case "ISTA":
 		// Message from the hub
 		if len(parts) < 3 {
@@ -154,7 +226,6 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 		//
 
 	default:
-		this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: msg})
 		this.malformed(parts)
 	}
 }
@@ -167,7 +238,6 @@ func (this *AdcProtocol) infoFlagsFor(u *UserInfo) map[string]string {
 		"US": fmt.Sprintf("%d", u.UploadSpeedBps),
 		"DS": fmt.Sprintf("%d", u.DownloadSpeedBps),
 		"SL": fmt.Sprintf("%d", u.Slots),
-		"FS": fmt.Sprintf("%d", u.Slots), // Free slots - NOT IN ADC DOCUMENTATION
 		"HN": fmt.Sprintf("%d", u.HubsUnregistered),
 		"HR": fmt.Sprintf("%d", u.HubsRegistered),
 		"HO": fmt.Sprintf("%d", u.HubsOperator),
@@ -215,30 +285,123 @@ func (this *AdcProtocol) ourINFO(includePid bool) string {
 	return ret[1:]
 }
 
-func (this *AdcProtocol) handleInfo(flags map[string]string) {
-	if flags["CT"] == "32" {
+func (this *AdcProtocol) parts2flags(parts []string) (map[string]string, error) {
+	flags := make(map[string]string, len(parts))
+	for _, flag := range parts {
+		if len(flag) < 2 {
+			return nil, fmt.Errorf("Malformed flag '%s'", flag)
+		}
+		flags[flag[0:2]] = this.unescape(flag[2:])
+	}
 
-		// IINF DEADCH++\sTest\shub VE2.12.1\s(r"[unknown]")\sRelease HI1 NIADCH++ APADCH++ CT32
-		// AP: extension 3.24 "Application and version separation in INF"
-		// HI:
+	return flags, nil
+}
 
-		// Hub properties updated
+func (this *AdcProtocol) handleHubInfo(flags map[string]string) error {
+	if flags["CT"] != "32" {
+		return fmt.Errorf("Expected CT==32")
+	}
 
-		// Special SUPPORT that is only indicated in IINF
-		if _, ok := flags["AP"]; ok {
-			this.supports[adcSeparateApVe] = struct{}{}
+	// IINF DEADCH++\sTest\shub VE2.12.1\s(r"[unknown]")\sRelease HI1 NIADCH++ APADCH++ CT32
+	// AP: extension 3.24 "Application and version separation in INF"
+	// HI:
+
+	// Hub properties updated
+
+	// Special SUPPORT that is only indicated in IINF
+	if _, ok := flags["AP"]; ok {
+		this.supports[adcSeparateApVe] = struct{}{}
+	}
+
+	// Hub's name is in "NI", hub description in "DE"
+	hubName, ok := flags["NI"]
+	if ok {
+		if hubDesc, ok := flags["DE"]; ok && len(hubDesc) > 0 {
+			hubName += " - " + hubDesc
 		}
 
-		hubName, ok := flags["DE"]
-		if ok {
-			this.hc.HubName = this.unescape(hubName)
-			this.hc.processEvent(HubEvent{EventType: EVENT_HUBNAME_CHANGED, Nick: this.hc.HubName})
-		}
+		this.hc.HubName = hubName
+		this.hc.processEvent(HubEvent{EventType: EVENT_HUBNAME_CHANGED, Nick: this.hc.HubName})
+	}
 
+	return nil
+}
+
+func (this *AdcProtocol) handleUserInfo(flags map[string]string) (*UserInfo, error) {
+
+	// User MyINFO
+	// BINF GUPR IDFEARIFD33NTGC4YBEZ3UFQS5R4ZXXTFL2QN2GRY PDZMIFLG5EKZG3BDRRMIJPG7ARNA6KW3JVIH3DF7Q NIivysaur5 SL3 FS3 SS0 SF0 HN1 HR0 HO0 VEEiskaltDC++\s2.2.9 US2621440 KPSHA256/3UPRORG4BLJ4CG6TO6R3G75A67LXOGD437NALQALRWJF6XBOECTA I40.0.0.0 U418301
+	// BINF GUPR I4172.17.0.1 U418301 IDFEARIFD33NTGC4YBEZ3UFQS5R4ZXXTFL2QN2GRY VEEiskaltDC++\s2.2.9 SF0 NIivysaur5 SL3 HN1 HO0 KPSHA256/3UPRORG4BLJ4CG6TO6R3G75A67LXOGD437NALQALRWJF6XBOECTA HR0 FS3 SS0 US2621440 SUSEGA,ADC0,TCP4,UDP4
+	// TODO
+
+	u := UserInfo{}
+	for prop, val := range flags {
+		switch prop {
+		case "ID":
+			u.CID = val
+		case "PD":
+		// ignore PID - it will only appear if we're talking about our own user
+		case "NI":
+			u.Nick = val
+		case "SL":
+			u.Slots, _ = strconv.ParseUint(val, 10, 64)
+		case "SS":
+			u.ShareSize, _ = strconv.ParseUint(val, 10, 64)
+		case "SF":
+			u.SharedFiles, _ = strconv.ParseUint(val, 10, 64)
+		case "HN":
+			u.HubsUnregistered, _ = strconv.ParseUint(val, 10, 64)
+		case "HR":
+			u.HubsRegistered, _ = strconv.ParseUint(val, 10, 64)
+		case "HO":
+			u.HubsOperator, _ = strconv.ParseUint(val, 10, 64)
+		case "US":
+			u.UploadSpeedBps, _ = strconv.ParseUint(val, 10, 64)
+		case "DS":
+			u.DownloadSpeedBps, _ = strconv.ParseUint(val, 10, 64)
+		case "KP":
+			u.Keyprint = val
+		case "I4":
+			u.IPv4Address = val
+		case "I6":
+			u.IPv6Address = val
+		case "U4":
+			u.IPv4UDPPort, _ = strconv.ParseUint(val, 10, 64)
+		case "U6":
+			u.IPv6UDPPort, _ = strconv.ParseUint(val, 10, 64)
+		case "SU":
+			u.SupportFlags = make(map[string]struct{})
+			for _, supportFlag := range strings.Split(val, ",") {
+				u.SupportFlags[supportFlag] = struct{}{}
+			}
+		}
+	}
+
+	// VE / AP
+	AP, hasAP := flags["AP"]
+	VE, hasVE := flags["VE"]
+	if hasAP && hasVE {
+		u.ClientTag = AP
+		u.ClientVersion = VE
+	} else if hasAP && !hasVE {
+		u.ClientTag, u.ClientVersion = this.getAPVEFromSingle(AP)
+	} else if !hasAP && hasVE {
+		u.ClientTag, u.ClientVersion = this.getAPVEFromSingle(VE)
+	}
+
+	if u.Nick == "" {
+		return nil, fmt.Errorf("Malformed user missing nick")
+	}
+
+	return &u, nil
+}
+
+func (this *AdcProtocol) getAPVEFromSingle(term string) (string, string) {
+	words := strings.Split(term, " ")
+	if len(words) > 1 {
+		return strings.Join(words[0:len(words)-1], " "), words[len(words)-1]
 	} else {
-		// User MyINFO
-		// TODO
-
+		return term, "0"
 	}
 }
 
@@ -249,7 +412,11 @@ func (this *AdcProtocol) enterNormalState() {
 }
 
 func (this *AdcProtocol) malformed(parts []string) {
-	this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Ignoring malformed, unhandled, or out-of-state protocol command '" + parts[0] + "'"})
+	this.logError(fmt.Errorf("Ignoring malformed, unhandled, or out-of-state protocol command %v", parts))
+}
+
+func (this *AdcProtocol) logError(e error) {
+	this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: "Protocol error: " + e.Error()})
 }
 
 func (this *AdcProtocol) escape(plaintext string) string {
diff --git a/HubConnection.go b/HubConnection.go
index 5e6b58a..5780cdc 100644
--- a/HubConnection.go
+++ b/HubConnection.go
@@ -19,6 +19,7 @@ type HubConnection struct {
 
 	usersMut sync.RWMutex
 	users    map[string]UserInfo
+	userSIDs map[string]string
 
 	proto Protocol
 
diff --git a/HubConnectionOptions.go b/HubConnectionOptions.go
index 1111788..063e775 100644
--- a/HubConnectionOptions.go
+++ b/HubConnectionOptions.go
@@ -43,10 +43,11 @@ func (this *HubConnectionOptions) prepareConnection() *HubConnection {
 	}
 
 	hc := HubConnection{
-		Hco:     this,
-		HubName: DEFAULT_HUB_NAME,
-		State:   CONNECTIONSTATE_DISCONNECTED,
-		users:   make(map[string]UserInfo),
+		Hco:      this,
+		HubName:  DEFAULT_HUB_NAME,
+		State:    CONNECTIONSTATE_DISCONNECTED,
+		users:    make(map[string]UserInfo),
+		userSIDs: make(map[string]string),
 
 		autoReconnect: !this.SkipAutoReconnect,
 	}
diff --git a/UserInfo.go b/UserInfo.go
index f1690cd..9450e9e 100644
--- a/UserInfo.go
+++ b/UserInfo.go
@@ -35,8 +35,11 @@ type UserInfo_ADCOnly struct {
 	IsHubOwner       bool
 	IPv4Address      string // Passive <==> these fields are not set
 	IPv6Address      string
-	IPv4UDPPort      uint
-	IPv6UDPPort      uint
+	IPv4UDPPort      uint64
+	IPv6UDPPort      uint64
+	Keyprint         string
+	CID              string
+	SupportFlags     map[string]struct{}
 }
 
 func NewUserInfo(username string) *UserInfo {

From 4c70900ef5af210f32f48292e8159e8e643a7cea Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 14:55:34 +1300
Subject: [PATCH 24/32] doc: TODO

--HG--
branch : adc
---
 TODO.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/TODO.txt b/TODO.txt
index c01da26..84685ef 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -1 +1,10 @@
+NMDC:
 - Implement ZPipe ($ZOn)
+
+ADC:
+- Passworded logons
+- SayPublic, SayPrivate
+- Handle public messages
+- Usercommands
+- ???
+

From 916874e8bdbeefddb5cdece23a65973b39b21528 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 17:24:08 +1300
Subject: [PATCH 25/32] adc: handle passworded logins, more error message types

--HG--
branch : adc
---
 AdcProtocol.go | 117 ++++++++++++++++++++++++++++++++++++-------------
 TODO.txt       |   4 +-
 2 files changed, 88 insertions(+), 33 deletions(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index ce50d86..56b42aa 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -112,8 +112,13 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 		}
 		this.sid = parts[1]
 
+		// State transition IDENTIFY --> VERIFY and send our own info
+		this.hc.SayRaw("BINF " + this.escape(this.sid) + " " + this.ourINFO(true) + "\n")
+		this.state = adcStateVerify
+
 	case "IINF":
 		// Hub telling information about itself
+		// ADCH++ sends this once we are successfully logged in
 
 		flags, err := this.parts2flags(parts[1:])
 		if err != nil {
@@ -132,18 +137,8 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 			return
 		}
 
-		if this.state == adcStateIdentify {
-			// Transition to state VERIFY and send our own info
-			this.hc.SayRaw("BINF " + this.escape(this.sid) + " " + this.ourINFO(true) + "\n")
-			this.state = adcStateVerify
-
-		} else if this.state == adcStateNormal || this.state == adcStateVerify {
-			// OK
-
-		} else {
-			// Bad state to be in
-			this.malformed(parts)
-			return
+		if this.state != adcStateNormal {
+			this.enterNormalState() // successful login
 		}
 
 	case "BINF":
@@ -211,8 +206,17 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 			handleNewUser()
 		}
 
+	case "IMSG":
+		// General message from the hub
+		if len(parts) < 2 {
+			this.malformed(parts)
+			return
+		}
+
+		this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_HUB, Message: this.unescape(parts[1])})
+
 	case "ISTA":
-		// Message from the hub
+		// Error message from the hub
 		if len(parts) < 3 {
 			this.malformed(parts)
 			return
@@ -222,8 +226,75 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 		msg := this.unescape(parts[2])
 		this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_HUB, Message: this.ErrorMessage(code, msg)})
 
+	case "IQUI":
+		// Error message from the hub
+		// IQUI V3M6 DI1 MSNick\staken,\splease\spick\sanother\sone TL-1
+		flags, err := this.parts2flags(parts[1:])
+		if err != nil {
+			return
+		}
+		if msg, ok := flags["MS"]; ok {
+			this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_HUB, Message: "The hub is closing our connection because: " + this.unescape(msg)})
+		} else {
+			this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_HUB, Message: "The hub is closing our connection"})
+		}
+
+	case "BMSG":
+		// Message from a user
+		if len(parts) < 3 {
+			this.malformed(parts)
+			return
+		}
+
+		sid := this.unescape(parts[1])
+		msg := this.unescape(parts[2])
+
+		this.hc.usersMut.Lock()
+		defer this.hc.usersMut.Unlock()
+		nick, ok := this.hc.userSIDs[sid]
+		if !ok {
+			this.logError(fmt.Errorf("Recieved message from unknown SID '%s'", sid))
+			return
+		}
+
+		this.hc.processEvent(HubEvent{EventType: EVENT_PUBLIC, Nick: nick, Message: msg})
+
 	case "IGPA":
-		//
+		// Password is needed
+		// IGPA 7EIAAAECLMAAAPJQAAADQQYAAAWAYAAAKVFQAAF6EAAAAAYFAAAA
+		// HPAS LZDIJOTZDPWHINHGPT5RHT6WLU7DRME7DQO2O3Q
+		if len(parts) < 2 {
+			this.malformed(parts)
+			return
+		}
+
+		/*
+			For GPA/PAS, assuming that '12345' is the random data supplied in GPA, then;
+			PAS = Base32( Hash( password + '12345' ) )
+
+			GPA: The data parameter is at least 24 random bytes (base32 encoded).
+		*/
+
+		data_base32 := parts[1]
+		if len(data_base32)%5 != 0 {
+			data_base32 += strings.Repeat("=", 6-(len(data_base32)%5))
+		}
+
+		data_raw, err := base32.StdEncoding.DecodeString(data_base32)
+		if err != nil {
+			this.logError(err)
+			return
+		}
+
+		resp := Base32(Tiger(this.hc.Hco.NickPassword + string(data_raw)))
+		this.hc.SayRaw("HPAS " + resp + "\n")
+
+	case "EMSG":
+		// Private message from other user
+		// EMSG I5RO FMWH test\spm PMI5RO
+
+	case "DCTM": // Client-client ConnectToMe
+		// ignore
 
 	default:
 		this.malformed(parts)
@@ -250,23 +321,7 @@ func (this *AdcProtocol) infoFlagsFor(u *UserInfo) map[string]string {
 		parts["VE"] = fmt.Sprintf("%s %s", u.ClientVersion, u.ClientTag)
 	}
 
-	ct := 0 // 1=bot, 2=registered user, 4=operator, 8=super user, 16=hub owner, 32=hub
-	if u.IsBot {
-		ct |= 1
-	}
-	if u.IsRegistered {
-		ct |= 2
-	}
-	if u.IsOperator {
-		ct |= 4
-	}
-	if u.IsSuperUser {
-		ct |= 8
-	}
-	if u.IsHubOwner {
-		ct |= 16
-	}
-	parts["CT"] = fmt.Sprintf("%d", ct)
+	// Do not send the hub a CT (it decides what type we are)
 
 	return parts
 }
diff --git a/TODO.txt b/TODO.txt
index 84685ef..0dbe648 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -2,9 +2,9 @@ NMDC:
 - Implement ZPipe ($ZOn)
 
 ADC:
-- Passworded logons
 - SayPublic, SayPrivate
-- Handle public messages
+- Recieve PMs
+- Test that user info updates work
 - Usercommands
 - ???
 

From d392cd379d38a7ca4c9cd5ac8d4e4141ca445e54 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 17:53:14 +1300
Subject: [PATCH 26/32] adc: handle user parts

--HG--
branch : adc
---
 AdcProtocol.go | 30 ++++++++++++++++++++++++++----
 1 file changed, 26 insertions(+), 4 deletions(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index 56b42aa..e079df9 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -229,14 +229,36 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 	case "IQUI":
 		// Error message from the hub
 		// IQUI V3M6 DI1 MSNick\staken,\splease\spick\sanother\sone TL-1
-		flags, err := this.parts2flags(parts[1:])
+		if len(parts) < 2 {
+			this.malformed(parts)
+			return
+		}
+
+		sid := parts[1]
+
+		flags, err := this.parts2flags(parts[2:])
 		if err != nil {
 			return
 		}
-		if msg, ok := flags["MS"]; ok {
-			this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_HUB, Message: "The hub is closing our connection because: " + this.unescape(msg)})
+
+		if sid == this.sid {
+			if msg, ok := flags["MS"]; ok {
+				this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_HUB, Message: "The hub is closing our connection because: " + this.unescape(msg)})
+			} else {
+				this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_HUB, Message: "The hub is closing our connection"})
+			}
 		} else {
-			this.hc.processEvent(HubEvent{EventType: EVENT_SYSTEM_MESSAGE_FROM_HUB, Message: "The hub is closing our connection"})
+			this.hc.usersMut.Lock()
+			defer this.hc.usersMut.Unlock()
+			otherSidNick, ok := this.hc.userSIDs[sid]
+			if ok {
+				delete(this.hc.userSIDs, sid)
+				delete(this.hc.users, otherSidNick)
+				this.hc.processEvent(HubEvent{EventType: EVENT_USER_PART, Nick: otherSidNick})
+			} else {
+				// ??
+				this.logError(fmt.Errorf("An unknown user quit the hub (SID=%s)", sid))
+			}
 		}
 
 	case "BMSG":

From 9e2ce27f0863b6f8193329b4031eaa777106095a Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 17:53:24 +1300
Subject: [PATCH 27/32] adc: fix length detection in password challenge nonce

--HG--
branch : adc
---
 AdcProtocol.go | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index e079df9..a19c3ed 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -78,6 +78,7 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 	}
 
 	this.hc.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: msg})
+
 	parts := strings.Split(msg, " ")
 	switch parts[0] {
 
@@ -298,8 +299,8 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 		*/
 
 		data_base32 := parts[1]
-		if len(data_base32)%5 != 0 {
-			data_base32 += strings.Repeat("=", 6-(len(data_base32)%5))
+		if len(data_base32)%8 != 0 {
+			data_base32 += strings.Repeat("=", 8-(len(data_base32)%8))
 		}
 
 		data_raw, err := base32.StdEncoding.DecodeString(data_base32)

From 433bf712b96a0fe85aba14dac682e5d69bb6e3e4 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 17:54:56 +1300
Subject: [PATCH 28/32] adc: ignore search requests

--HG--
branch : adc
---
 AdcProtocol.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index a19c3ed..1dbe48e 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -316,8 +316,11 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 		// Private message from other user
 		// EMSG I5RO FMWH test\spm PMI5RO
 
+	// Ignored messages
+	// ````````````````
+
 	case "DCTM": // Client-client ConnectToMe
-		// ignore
+	case "BSCH": // Search
 
 	default:
 		this.malformed(parts)

From 2610003cdb16e7d6f43721fa2bcc580c4bc728b3 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 18:11:25 +1300
Subject: [PATCH 29/32] adc: working public and private messages

--HG--
branch : adc
---
 AdcProtocol.go | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 TODO.txt       |  4 +---
 2 files changed, 49 insertions(+), 3 deletions(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index 1dbe48e..7671c6c 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -71,6 +71,27 @@ func (this *AdcProtocol) pid2cid(pid_base32 string) (string, error) {
 	return cid_base32, nil
 }
 
+func (this *AdcProtocol) SID2Nick(sid string) (string, bool) {
+	this.hc.usersMut.Lock()
+	defer this.hc.usersMut.Unlock()
+
+	nick, ok := this.hc.userSIDs[sid]
+	return nick, ok
+}
+
+func (this *AdcProtocol) Nick2SID(targetNick string) (string, bool) {
+	this.hc.usersMut.Lock()
+	defer this.hc.usersMut.Unlock()
+
+	for sid, nick := range this.hc.userSIDs {
+		if nick == targetNick {
+			return sid, true
+		}
+	}
+
+	return "", false
+}
+
 func (this *AdcProtocol) ProcessCommand(msg string) {
 
 	if len(msg) == 0 {
@@ -264,6 +285,7 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 
 	case "BMSG":
 		// Message from a user
+		// BMSG ZVF4 hi
 		if len(parts) < 3 {
 			this.malformed(parts)
 			return
@@ -315,6 +337,26 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 	case "EMSG":
 		// Private message from other user
 		// EMSG I5RO FMWH test\spm PMI5RO
+		// EMSG sender recip==us message [flags...]
+		if len(parts) < 4 {
+			this.malformed(parts)
+			return
+		}
+
+		if parts[2] != this.sid {
+			this.logError(fmt.Errorf("Recieved a PM intended for someone else (got SID=%s expected SID=%s)", parts[2], this.sid))
+			return
+		}
+
+		senderSid := parts[1]
+		senderNick, ok := this.SID2Nick(parts[1])
+		if !ok {
+			this.logError(fmt.Errorf("Recieved a PM from an unknown user (SID=%s)", senderSid))
+			return
+		}
+
+		msg := this.unescape(parts[3])
+		this.hc.processEvent(HubEvent{EventType: EVENT_PRIVATE, Nick: senderNick, Message: msg})
 
 	// Ignored messages
 	// ````````````````
@@ -514,9 +556,15 @@ func (this *AdcProtocol) unescape(encoded string) string {
 }
 
 func (this *AdcProtocol) SayPublic(msg string) {
+	this.hc.SayRaw("BMSG " + this.sid + " " + this.escape(msg) + "\n")
 }
 
 func (this *AdcProtocol) SayPrivate(user, message string) {
+	if sid, ok := this.Nick2SID(user); ok {
+		this.hc.SayRaw("DMSG " + this.sid + " " + sid + " " + this.escape(message) + "\n")
+	} else {
+		this.logError(fmt.Errorf("Unknown user '%s'", user))
+	}
 }
 
 func (this *AdcProtocol) ProtoMessageSeparator() string {
diff --git a/TODO.txt b/TODO.txt
index 0dbe648..e0c97bd 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -2,9 +2,7 @@ NMDC:
 - Implement ZPipe ($ZOn)
 
 ADC:
-- SayPublic, SayPrivate
-- Recieve PMs
 - Test that user info updates work
+     - they're incremental: BINF Z3BA HO1
 - Usercommands
 - ???
-

From f0e5270458b993ecf66b31c09d66588fbda5a904 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 18:11:32 +1300
Subject: [PATCH 30/32] adc: fix wrong client tag ordering

--HG--
branch : adc
---
 AdcProtocol.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index 7671c6c..94d7c55 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -386,7 +386,7 @@ func (this *AdcProtocol) infoFlagsFor(u *UserInfo) map[string]string {
 		parts["AP"] = u.ClientTag
 		parts["VE"] = u.ClientVersion
 	} else {
-		parts["VE"] = fmt.Sprintf("%s %s", u.ClientVersion, u.ClientTag)
+		parts["VE"] = fmt.Sprintf("%s %s", u.ClientTag, u.ClientVersion)
 	}
 
 	// Do not send the hub a CT (it decides what type we are)

From 882f60f1571f3c05863a1f2f319caeca89520da6 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 18:38:03 +1300
Subject: [PATCH 31/32] adc: support incremental user updates

--HG--
branch : adc
---
 AdcProtocol.go | 84 ++++++++++++++++++++++++++++----------------------
 TODO.txt       |  2 --
 2 files changed, 48 insertions(+), 38 deletions(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index 94d7c55..8488c4a 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -175,21 +175,56 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 			return
 		}
 
-		uinfo, err := this.handleUserInfo(flags)
-		if err != nil {
-			this.logError(err)
-			return
-		}
-
 		// Log this user in, and associate this SID with this user
 		this.hc.usersMut.Lock()
 		defer this.hc.usersMut.Unlock()
 
-		newNick := uinfo.Nick
-
 		oldNick, sidExists := this.hc.userSIDs[sid]
 
-		handleNewUser := func() {
+		uinfo := UserInfo{}
+		if sidExists {
+			uinfo_lookup, ok := this.hc.users[oldNick]
+			if !ok {
+				// Shouldn't happen
+				this.hc.processEvent(HubEvent{
+					EventType: EVENT_SYSTEM_MESSAGE_FROM_CONN,
+					Message:   fmt.Sprintf("Hub connection corrupted (missing info for SID='%s' nick='%s'), disconnecting", sid, oldNick),
+				})
+				this.hc.Disconnect()
+				return
+			}
+
+			uinfo = uinfo_lookup
+		}
+
+		this.updateUserInfo(&uinfo, flags)
+		newNick := uinfo.Nick
+		if len(newNick) == 0 {
+			this.logError(fmt.Errorf("Zero-length nick for user (SID='%s')", sid))
+		}
+
+		shouldHandleNewUser := false
+		if sidExists && oldNick != newNick {
+			// Nick change = delete all trace of this user first, treat as new
+
+			delete(this.hc.users, oldNick)
+			delete(this.hc.userSIDs, sid)
+			this.hc.processEvent(HubEvent{EventType: EVENT_USER_PART, Nick: oldNick})
+			shouldHandleNewUser = true
+
+		} else if sidExists && oldNick == newNick {
+			// Updating existing user
+			this.hc.users[newNick] = uinfo
+			this.hc.processEvent(HubEvent{EventType: EVENT_USER_UPDATED_INFO, Nick: newNick})
+
+		} else if !sidExists {
+			// User joined
+			shouldHandleNewUser = true
+		}
+
+		//
+
+		if shouldHandleNewUser {
 			// Install this SID as pointing to this nick
 			this.hc.userSIDs[sid] = uinfo.Nick
 
@@ -206,28 +241,10 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 			}
 
 			// Notifications
-			this.hc.users[newNick] = *uinfo
+			this.hc.users[newNick] = uinfo
 			this.hc.processEvent(HubEvent{EventType: EVENT_USER_JOINED, Nick: newNick})
 		}
 
-		if sidExists && oldNick != newNick {
-			// Nick change = delete all trace of this user first, treat as new
-
-			delete(this.hc.users, oldNick)
-			delete(this.hc.userSIDs, sid)
-			this.hc.processEvent(HubEvent{EventType: EVENT_USER_PART, Nick: oldNick})
-			handleNewUser()
-
-		} else if sidExists && oldNick == newNick {
-			// Updating existing user
-			this.hc.users[newNick] = *uinfo
-			this.hc.processEvent(HubEvent{EventType: EVENT_USER_UPDATED_INFO, Nick: newNick})
-
-		} else if !sidExists {
-			// User joined
-			handleNewUser()
-		}
-
 	case "IMSG":
 		// General message from the hub
 		if len(parts) < 2 {
@@ -450,14 +467,15 @@ func (this *AdcProtocol) handleHubInfo(flags map[string]string) error {
 	return nil
 }
 
-func (this *AdcProtocol) handleUserInfo(flags map[string]string) (*UserInfo, error) {
+func (this *AdcProtocol) updateUserInfo(u *UserInfo, flags map[string]string) {
 
 	// User MyINFO
 	// BINF GUPR IDFEARIFD33NTGC4YBEZ3UFQS5R4ZXXTFL2QN2GRY PDZMIFLG5EKZG3BDRRMIJPG7ARNA6KW3JVIH3DF7Q NIivysaur5 SL3 FS3 SS0 SF0 HN1 HR0 HO0 VEEiskaltDC++\s2.2.9 US2621440 KPSHA256/3UPRORG4BLJ4CG6TO6R3G75A67LXOGD437NALQALRWJF6XBOECTA I40.0.0.0 U418301
 	// BINF GUPR I4172.17.0.1 U418301 IDFEARIFD33NTGC4YBEZ3UFQS5R4ZXXTFL2QN2GRY VEEiskaltDC++\s2.2.9 SF0 NIivysaur5 SL3 HN1 HO0 KPSHA256/3UPRORG4BLJ4CG6TO6R3G75A67LXOGD437NALQALRWJF6XBOECTA HR0 FS3 SS0 US2621440 SUSEGA,ADC0,TCP4,UDP4
+	// Or maybe only incremental:
+	// BINF Z3BA HO1
 	// TODO
 
-	u := UserInfo{}
 	for prop, val := range flags {
 		switch prop {
 		case "ID":
@@ -511,12 +529,6 @@ func (this *AdcProtocol) handleUserInfo(flags map[string]string) (*UserInfo, err
 	} else if !hasAP && hasVE {
 		u.ClientTag, u.ClientVersion = this.getAPVEFromSingle(VE)
 	}
-
-	if u.Nick == "" {
-		return nil, fmt.Errorf("Malformed user missing nick")
-	}
-
-	return &u, nil
 }
 
 func (this *AdcProtocol) getAPVEFromSingle(term string) (string, string) {
diff --git a/TODO.txt b/TODO.txt
index e0c97bd..bd95b9b 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -2,7 +2,5 @@ NMDC:
 - Implement ZPipe ($ZOn)
 
 ADC:
-- Test that user info updates work
-     - they're incremental: BINF Z3BA HO1
 - Usercommands
 - ???

From 4c32cb965e392a3f36aa7bb0cc72ffdad78a2b37 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sun, 26 Nov 2017 19:19:06 +1300
Subject: [PATCH 32/32] adc: usercommand support

--HG--
branch : adc
---
 AdcProtocol.go | 45 ++++++++++++++++++++++++++++++++++++++++++++-
 UserCommand.go |  9 +++++----
 2 files changed, 49 insertions(+), 5 deletions(-)

diff --git a/AdcProtocol.go b/AdcProtocol.go
index 8488c4a..fe4bdfa 100644
--- a/AdcProtocol.go
+++ b/AdcProtocol.go
@@ -53,7 +53,7 @@ func NewAdcProtocol(hc *HubConnection) Protocol {
 	proto.pid = pid_base32
 
 	// Start logging in
-	hc.SayRaw("HSUP ADBASE ADTIGR\n")
+	hc.SayRaw("HSUP ADBASE ADTIGR ADUCMD\n")
 
 	return &proto
 }
@@ -375,6 +375,49 @@ func (this *AdcProtocol) ProcessCommand(msg string) {
 		msg := this.unescape(parts[3])
 		this.hc.processEvent(HubEvent{EventType: EVENT_PRIVATE, Nick: senderNick, Message: msg})
 
+	case "ICMD":
+		// Usercommand
+		// ICMD ADCH++/About\sthis\shub TTHMSG\s+about\n CT3
+
+		if len(parts) < 2 {
+			this.malformed(parts)
+			return
+		}
+
+		uc := UserCommand{
+			Message: this.unescape(parts[1]),
+			Type:    USERCOMMAND_TYPE_RAW, // default
+		}
+
+		flags, err := this.parts2flags(parts[2:])
+		if err != nil {
+			this.malformed(parts)
+			return
+		}
+
+		if ct, ok := flags["CT"]; ok {
+			ct64, _ := strconv.ParseUint(ct, 10, 64)
+			uc.Context = UserCommandContext(ct64)
+		}
+
+		if tt, ok := flags["TT"]; ok {
+			uc.Command = tt
+		}
+
+		if sp, ok := flags["SP"]; ok && sp == "1" {
+			uc.Type = USERCOMMAND_TYPE_SEPARATOR
+		}
+
+		if co, ok := flags["CO"]; ok && co == "1" {
+			uc.Type = USERCOMMAND_TYPE_NICKLIMITED // "Constrained" in ADC parlance
+		}
+
+		if rm, ok := flags["RM"]; ok && rm == "1" {
+			uc.RemoveThis = true
+		}
+
+		this.hc.processEvent(HubEvent{EventType: EVENT_USERCOMMAND, UserCommand: &uc})
+
 	// Ignored messages
 	// ````````````````
 
diff --git a/UserCommand.go b/UserCommand.go
index 9032223..6b7c0a5 100644
--- a/UserCommand.go
+++ b/UserCommand.go
@@ -19,8 +19,9 @@ const (
 )
 
 type UserCommand struct {
-	Type    UserCommandType
-	Context UserCommandContext
-	Message string
-	Command string
+	Type       UserCommandType
+	Context    UserCommandContext
+	Message    string
+	Command    string
+	RemoveThis bool // Currently only set by ADC hubs
 }