From 231422c8743b544fe6c917ae16fbd41e696763b5 Mon Sep 17 00:00:00 2001 From: Sketch <75850871+noahpistilli@users.noreply.github.com> Date: Wed, 13 Sep 2023 18:32:37 -0400 Subject: [PATCH] Everything up to GPCM getprofile --- common/config.go | 29 ++++++ common/encoding.go | 28 ++++++ common/gamespy_message.go | 75 +++++++++++++++ common/gamespy_test.go | 29 ++++++ common/utils.go | 18 ++++ config_example.xml | 12 +++ database/login.go | 96 +++++++++++++++++++ database/user.go | 56 +++++++++++ go.mod | 14 ++- go.sum | 190 ++++++++++++++++++++++++++++++++++++++ gpcm/login.go | 65 +++++++++++++ gpcm/main.go | 113 +++++++++++++++++++++++ gpcm/profile.go | 34 +++++++ gpsp/main.go | 46 +++++++++ main.go | 22 +++++ nas/login.go | 37 ++++++++ nas/main.go | 43 +++++++++ nas/route.go | 92 ++++++++++++++++++ nas/structure.go | 9 ++ 19 files changed, 1007 insertions(+), 1 deletion(-) create mode 100644 common/config.go create mode 100644 common/encoding.go create mode 100644 common/gamespy_message.go create mode 100644 common/gamespy_test.go create mode 100644 common/utils.go create mode 100644 config_example.xml create mode 100644 database/login.go create mode 100644 database/user.go create mode 100644 gpcm/login.go create mode 100644 gpcm/main.go create mode 100644 gpcm/profile.go create mode 100644 gpsp/main.go create mode 100644 main.go create mode 100644 nas/login.go create mode 100644 nas/main.go create mode 100644 nas/route.go create mode 100644 nas/structure.go diff --git a/common/config.go b/common/config.go new file mode 100644 index 0000000..ee4481e --- /dev/null +++ b/common/config.go @@ -0,0 +1,29 @@ +package common + +import ( + "encoding/xml" + "io/ioutil" +) + +type Config struct { + Username string `xml:"username"` + Password string `xml:"password"` + DatabaseAddress string `xml:"databaseAddress"` + DatabaseName string `xml:"databaseName"` + Address string `xml:"address"` +} + +func GetConfig() Config { + data, err := ioutil.ReadFile("config.xml") + if err != nil { + panic(err) + } + + var config Config + err = xml.Unmarshal(data, &config) + if err != nil { + panic(err) + } + + return config +} diff --git a/common/encoding.go b/common/encoding.go new file mode 100644 index 0000000..e42e549 --- /dev/null +++ b/common/encoding.go @@ -0,0 +1,28 @@ +package common + +import "fmt" + +func Base32Encode(value int) string { + alpha := "0123456789abcdefghijklmnopqrstuv" + + encoded := "" + for value > 0 { + encoded += string(alpha[value&0x1f]) + value >>= 5 + + fmt.Sprintf("%0.9s", encoded) + } + + encoded = reverse(encoded) + + return encoded +} + +func reverse(s string) string { + rns := []rune(s) + for i, j := 0, len(rns)-1; i < j; i, j = i+1, j-1 { + rns[i], rns[j] = rns[j], rns[i] + } + + return string(rns) +} diff --git a/common/gamespy_message.go b/common/gamespy_message.go new file mode 100644 index 0000000..cf5e653 --- /dev/null +++ b/common/gamespy_message.go @@ -0,0 +1,75 @@ +package common + +import ( + "errors" + "fmt" + "strings" +) + +type GameSpyCommand struct { + Command string + CommandValue string + OtherValues map[string]string +} + +var ( + InvalidGameSpyCommand = errors.New("invalid command received") +) + +func ParseGameSpyMessage(msg string) (*GameSpyCommand, error) { + g := &GameSpyCommand{ + OtherValues: map[string]string{}, + } + + if !strings.Contains(msg, `\\`) || !strings.Contains(msg, `\final\`) { + return nil, InvalidGameSpyCommand + } + + foundCommand := false + for len(msg) > 0 { + keyEnd := strings.Index(msg[1:], `\`) + 1 + key := msg[1:keyEnd] + value := "" + msg = msg[keyEnd+1:] + + if key == "final" { + // We are done. + break + } + + if strings.Contains(msg, `\`) { + if msg[0] != '\\' { + valueEnd := strings.Index(msg[1:], `\`) + value = msg[:valueEnd+1] + msg = msg[valueEnd+1:] + } + } else { + // We have most likely reached the end of the line. + // However, we do not want to exit out without parsing the final key. + value = msg + } + + if !foundCommand { + g.Command = key + g.CommandValue = value + foundCommand = true + } else { + g.OtherValues[key] = value + } + } + + return g, nil +} + +func CreateGameSpyMessage(command GameSpyCommand) string { + query := "" + for k, v := range command.OtherValues { + query += fmt.Sprintf(`\%s\%s`, strings.Replace(k, `\`, ``, -1), strings.Replace(v, `\`, ``, -1)) + } + + if command.Command != "" { + query = fmt.Sprintf(`\%s\%s%s`, command.Command, command.CommandValue, query) + } + + return query + `\final\` +} diff --git a/common/gamespy_test.go b/common/gamespy_test.go new file mode 100644 index 0000000..7d0dc46 --- /dev/null +++ b/common/gamespy_test.go @@ -0,0 +1,29 @@ +package common + +import ( + "fmt" + "testing" +) + +func TestParseGameSpyMessage(t *testing.T) { + _, err := ParseGameSpyMessage(`\login\\challenge\rc5lU5V5skphHnc1eSuXh8j2EzyI2TZP\authtoken\NDSLplmebUYep9V3q2CuPf5HRWoz0K3wJNzO1XqJog0QKHTIJczIu89ecAfhwKDlngIEztYsOJoH8c4zPrp\partnerid\11\response\394beecb14fa59feb8d4c3690975e24c\firewall\1\port\0\productid\11059\gamename\mariokartwii\namespaceid\16\sdkrevision\3\quiet\0\id\1\final\`) + if err != nil { + t.Error(err) + } +} + +func TestCreateGameSpyMessage(t *testing.T) { + fmt.Println(CreateGameSpyMessage(GameSpyCommand{ + Command: "lc", + CommandValue: "2", + OtherValues: map[string]string{ + "sesskey": "07187200", + "proof": "b0a0e576b28861f2512b943daf374158", + "userid": "8467681766588", + "profileid": "1", + "uniquenick": "7me4ijr5sRMCJ3cf1asa@nds", + "lt": "MDEyMzQ1Njc4OTBBQkNERUY=", + "id": "1", + }, + })) +} diff --git a/common/utils.go b/common/utils.go new file mode 100644 index 0000000..fa74047 --- /dev/null +++ b/common/utils.go @@ -0,0 +1,18 @@ +package common + +import ( + "math/rand" + "time" +) + +var letterRunes = []rune("ABCDEFGHIJKLMNOPQRSTUVWXYZ") + +func RandomString(n int) string { + rand.Seed(time.Now().UnixNano()) + + b := make([]rune, n) + for i := range b { + b[i] = letterRunes[rand.Intn(len(letterRunes))] + } + return string(b) +} diff --git a/config_example.xml b/config_example.xml new file mode 100644 index 0000000..199895b --- /dev/null +++ b/config_example.xml @@ -0,0 +1,12 @@ + + +
127.0.0.1:8080
+ + + username + password + + + 127.0.0.1 + wwfc + \ No newline at end of file diff --git a/database/login.go b/database/login.go new file mode 100644 index 0000000..974a9c7 --- /dev/null +++ b/database/login.go @@ -0,0 +1,96 @@ +package database + +import ( + "context" + "github.com/jackc/pgx/v4/pgxpool" + "wwfc/common" +) + +const ( + DoesAuthTokenExist = `SELECT EXISTS(SELECT 1 FROM logins WHERE auth_token = $1)` + DoesNASUserExist = `SELECT EXISTS(SELECT 1 FROM logins WHERE user_id = $1)` + UpdateUserLogin = `UPDATE logins SET auth_token = $1 WHERE user_id = $2` + InsertUserLogin = `INSERT INTO logins (auth_token, user_id, gsbrcd) VALUES ($1, $2, $3)` + GetNASUserLogin = `SELECT user_id, gsbrcd FROM logins WHERE auth_token = $1 LIMIT 1` +) + +func GenerateAuthToken(pool *pgxpool.Pool, ctx context.Context, userId int, gsbrcd string) string { + authToken := "NDS" + common.RandomString(80) + for { + // We must make sure that the auth token doesn't exist before attempting to insert it into the database. + var exists bool + err := pool.QueryRow(ctx, DoesAuthTokenExist, authToken).Scan(&exists) + if err != nil { + panic(err) + } + + if !exists { + break + } + + authToken = "NDS" + common.RandomString(80) + } + + var exists bool + err := pool.QueryRow(ctx, DoesNASUserExist, userId).Scan(&exists) + if err != nil { + panic(err) + } + + if exists { + // UPDATE rather than INSERT + _, err = pool.Exec(ctx, UpdateUserLogin, authToken, userId) + if err != nil { + panic(err) + } + } else { + _, err = pool.Exec(ctx, InsertUserLogin, authToken, userId, gsbrcd) + if err != nil { + panic(err) + } + } + + return authToken +} + +func GetNASLogin(pool *pgxpool.Pool, ctx context.Context, authToken string) (int, string) { + var userId int + var gsbrcd string + err := pool.QueryRow(ctx, GetNASUserLogin, authToken).Scan(&userId, &gsbrcd) + if err != nil { + panic(err) + } + + return userId, gsbrcd +} + +func LoginUserToGCPM(pool *pgxpool.Pool, ctx context.Context, authToken string) User { + // Query login table with the auth token. + userId, gsbrcd := GetNASLogin(pool, ctx, authToken) + + var exists bool + err := pool.QueryRow(ctx, DoesUserExist, userId, gsbrcd).Scan(&exists) + if err != nil { + panic(err) + } + + uniqueNickname := common.Base32Encode(userId) + gsbrcd + + user := User{ + UserId: userId, + GsbrCode: gsbrcd, + Password: "troll", + Email: uniqueNickname + "@nds", + UniqueNick: uniqueNickname, + } + + if !exists { + // Create the GPCM account + user.CreateUser(pool, ctx) + } else { + // TODO get the profile ID!!!!! + user.ProfileId = 4 + } + + return user +} diff --git a/database/user.go b/database/user.go new file mode 100644 index 0000000..4f25c54 --- /dev/null +++ b/database/user.go @@ -0,0 +1,56 @@ +package database + +import ( + "context" + "errors" + "github.com/jackc/pgx/v4" + "github.com/jackc/pgx/v4/pgxpool" + "wwfc/common" +) + +const ( + InsertUser = `INSERT INTO users (user_id, gsbrcd, password, email, unique_nick) VALUES ($1, $2, $3, $4, $5) RETURNING profile_id` + CreateUserSession = `INSERT INTO sessions (session_key, profile_id, login_ticket) VALUES ($1, $2, $3)` + DoesUserExist = `SELECT EXISTS(SELECT 1 FROM users WHERE user_id = $1 AND gsbrcd = $2)` + DeleteUserSession = `DELETE FROM sessions WHERE profile_id = $1` +) + +type User struct { + ProfileId int + UserId int + GsbrCode string + Password string + Email string + UniqueNick string +} + +func (user *User) CreateUser(pool *pgxpool.Pool, ctx context.Context) { + err := pool.QueryRow(ctx, InsertUser, user.UserId, user.GsbrCode, user.Password, user.Email, user.UniqueNick).Scan(&user.ProfileId) + if err != nil { + panic(err) + } +} + +func CreateSession(pool *pgxpool.Pool, ctx context.Context, profileId int, loginTicket string) string { + // Delete session first. + deleteSession(pool, ctx, profileId) + + sessionKey := common.RandomString(8) + _, err := pool.Exec(ctx, CreateUserSession, sessionKey, profileId, loginTicket) + if err != nil { + panic(err) + } + + return sessionKey +} + +func deleteSession(pool *pgxpool.Pool, ctx context.Context, profileId int) { + _, err := pool.Exec(ctx, DeleteUserSession, profileId) + if err != nil && !errors.Is(err, pgx.ErrNoRows) { + panic(err) + } +} + +func GetProfile(pool *pgxpool.Pool, ctx context.Context) { + +} diff --git a/go.mod b/go.mod index 187ac4e..d6aca1f 100644 --- a/go.mod +++ b/go.mod @@ -7,4 +7,16 @@ require ( golang.org/x/net v0.10.0 ) -require golang.org/x/text v0.9.0 // indirect +require ( + github.com/jackc/chunkreader/v2 v2.0.1 // indirect + github.com/jackc/pgconn v1.14.0 // indirect + github.com/jackc/pgio v1.0.0 // indirect + github.com/jackc/pgpassfile v1.0.0 // indirect + github.com/jackc/pgproto3/v2 v2.3.2 // indirect + github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect + github.com/jackc/pgtype v1.14.0 // indirect + github.com/jackc/pgx/v4 v4.18.1 // indirect + github.com/jackc/puddle v1.3.0 // indirect + golang.org/x/crypto v0.6.0 // indirect + golang.org/x/text v0.9.0 // indirect +) diff --git a/go.sum b/go.sum index 871e4ec..509d6c8 100644 --- a/go.sum +++ b/go.sum @@ -1,6 +1,196 @@ +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs= +github.com/cockroachdb/apd v1.1.0/go.mod h1:8Sl8LxpKi29FqWXR16WEFZRNSz3SoPzUzeMeY4+DwBQ= +github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4= +github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4= +github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/go-kit/log v0.1.0/go.mod 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h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI= +gopkg.in/inconshreveable/log15.v2 v2.0.0-20180818164646-67afb5ed74ec/go.mod h1:aPpfJ7XW+gOuirDoZ8gHhLh3kZ1B08FtV2bbmy7Jv3s= +gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg= diff --git a/gpcm/login.go b/gpcm/login.go new file mode 100644 index 0000000..f32a53a --- /dev/null +++ b/gpcm/login.go @@ -0,0 +1,65 @@ +package gpcm + +import ( + "context" + "crypto/md5" + "encoding/base64" + "encoding/hex" + "github.com/jackc/pgx/v4/pgxpool" + "log" + "strconv" + "strings" + "wwfc/common" + "wwfc/database" +) + +func generateResponse(gpcmChallenge, nasChallenge, authToken, clientChallenge string) string { + hasher := md5.New() + hasher.Write([]byte(nasChallenge)) + str := hex.EncodeToString(hasher.Sum(nil)) + str += " " + str += authToken + str += clientChallenge + str += gpcmChallenge + str += hex.EncodeToString(hasher.Sum(nil)) + + _hasher := md5.New() + _hasher.Write([]byte(str)) + return hex.EncodeToString(_hasher.Sum(nil)) +} + +func generateProof(gpcmChallenge, nasChallenge, authToken, clientChallenge string) string { + return generateResponse(clientChallenge, nasChallenge, authToken, gpcmChallenge) +} + +func login(pool *pgxpool.Pool, ctx context.Context, command *common.GameSpyCommand, challenge string) string { + // TODO: Validate login token with one in database + authToken := command.OtherValues["authtoken"] + response := generateResponse(challenge, "0qUekMb4", authToken, command.OtherValues["challenge"]) + if response != command.OtherValues["response"] { + log.Fatalf("i hate my life") + } + + proof := generateProof(challenge, "0qUekMb4", command.OtherValues["authtoken"], command.OtherValues["challenge"]) + + // Perform the login with the database. + user := database.LoginUserToGCPM(pool, ctx, authToken) + loginTicket := strings.Replace(base64.StdEncoding.EncodeToString([]byte(common.RandomString(16))), "=", "_", -1) + + // Now initiate the session + _ = database.CreateSession(pool, ctx, user.ProfileId, loginTicket) + + return common.CreateGameSpyMessage(common.GameSpyCommand{ + Command: "lc", + CommandValue: "2", + OtherValues: map[string]string{ + "sesskey": "199714190", + "proof": proof, + "userid": strconv.Itoa(user.UserId), + "profileid": strconv.Itoa(user.ProfileId), + "uniquenick": user.UniqueNick, + "lt": loginTicket, + "id": command.OtherValues["id"], + }, + }) +} diff --git a/gpcm/main.go b/gpcm/main.go new file mode 100644 index 0000000..86820ca --- /dev/null +++ b/gpcm/main.go @@ -0,0 +1,113 @@ +package gpcm + +import ( + "bufio" + "context" + "errors" + "fmt" + "github.com/jackc/pgx/v4/pgxpool" + "github.com/logrusorgru/aurora/v3" + "io" + "log" + "net" + "os" + "time" + "wwfc/common" +) + +var ( + ctx = context.Background() + pool *pgxpool.Pool +) + +func checkError(err error) { + if err != nil { + log.Fatalf("GPCM server has encountered a fatal error! Reason: %v\n", err) + } +} + +func StartServer() { + // Get config + config := common.GetConfig() + + // Start SQL + dbString := fmt.Sprintf("postgres://%s:%s@%s/%s", config.Username, config.Password, config.DatabaseAddress, config.DatabaseName) + dbConf, err := pgxpool.ParseConfig(dbString) + checkError(err) + pool, err = pgxpool.ConnectConfig(ctx, dbConf) + checkError(err) + + l, err := net.Listen("tcp", "127.0.0.1:29900") + if err != nil { + fmt.Println("Error listening:", err.Error()) + os.Exit(1) + } + // Close the listener when the application closes. + defer l.Close() + fmt.Println("Listening on " + "127.0.0.1:29900") + for { + // Listen for an incoming connection. + conn, err := l.Accept() + if err != nil { + fmt.Println("Error accepting: ", err.Error()) + os.Exit(1) + } + + // Handle connections in a new goroutine. + go handleRequest(conn) + } +} + +// Handles incoming requests. +func handleRequest(conn net.Conn) { + defer conn.Close() + + // Set session ID and challenge + challenge := common.RandomString(10) + + err := conn.(*net.TCPConn).SetKeepAlive(true) + if err != nil { + fmt.Printf("Unable to set keepalive - %s", err) + } + + err = conn.(*net.TCPConn).SetKeepAlivePeriod(time.Hour * 1000) + if err != nil { + fmt.Printf("Unable to set keepalive - %s", err) + } + + log.Printf("%s: Connection established from %s. Sending challenge.", aurora.Green("[NOTICE]"), aurora.Yellow(conn.RemoteAddr())) + conn.Write([]byte(fmt.Sprintf(`\lc\1\challenge\%s\id\1\final\`, challenge))) + + // Here we go into the listening loop + for { + buffer := make([]byte, 1024) + _, err := bufio.NewReader(conn).Read(buffer) + if err != nil { + if errors.Is(err, io.EOF) { + // Client closed connection, terminate. + return + } + } + + command, err := common.ParseGameSpyMessage(string(buffer)) + if err != nil { + log.Fatal(err) + } + + log.Printf("%s: Message received. Command: %s", aurora.Green("[NOTICE]"), aurora.Yellow(command.Command)) + switch command.Command { + case "ka": + conn.Write([]byte(`\ka\final\`)) + break + case "login": + payload := login(pool, ctx, command, challenge) + conn.Write([]byte(payload)) + break + case "getprofile": + payload := getProfile(pool, ctx, command) + fmt.Println(payload) + conn.Write([]byte(payload)) + break + } + } +} diff --git a/gpcm/profile.go b/gpcm/profile.go new file mode 100644 index 0000000..a1c6d78 --- /dev/null +++ b/gpcm/profile.go @@ -0,0 +1,34 @@ +package gpcm + +import ( + "context" + "encoding/hex" + "fmt" + "github.com/jackc/pgx/v4/pgxpool" + "wwfc/common" +) + +func getProfile(pool *pgxpool.Pool, ctx context.Context, command *common.GameSpyCommand) string { + for k, v := range command.OtherValues { + fmt.Println(fmt.Sprintf("%s: %s", k, v)) + } + + sig := hex.EncodeToString([]byte(common.RandomString(16))) + return common.CreateGameSpyMessage(common.GameSpyCommand{ + Command: "pi", + CommandValue: "", + OtherValues: map[string]string{ + "profileid": command.OtherValues["profileid"], + "nick": "7me4ijr5sRMCJ23ul711", + "userid": "8467681766588", + "email": "7me4ijr5sRMCJ23ul711@nds", + "sig": sig, + "uniquenick": "7me4ijr5sRMCJ23ul711", + "pid": "11", + "lon": "0.000000", + "lat": "0.000000", + "loc": "", + "id": command.OtherValues["id"], + }, + }) +} diff --git a/gpsp/main.go b/gpsp/main.go new file mode 100644 index 0000000..05583e2 --- /dev/null +++ b/gpsp/main.go @@ -0,0 +1,46 @@ +package gpsp + +import ( + "fmt" + "net" + "os" +) + +func StartServer() { + l, err := net.Listen("tcp", "127.0.0.1:27900") + if err != nil { + fmt.Println("Error listening:", err.Error()) + os.Exit(1) + } + // Close the listener when the application closes. + defer l.Close() + fmt.Println("Listening on " + "127.0.0.1:29901") + for { + // Listen for an incoming connection. + conn, err := l.Accept() + if err != nil { + fmt.Println("Error accepting: ", err.Error()) + os.Exit(1) + } + // Handle connections in a new goroutine. + fmt.Println("aaaa") + go handleRequest(conn) + } +} + +// Handles incoming requests. +func handleRequest(conn net.Conn) { + // Make a buffer to hold incoming data. + buf := make([]byte, 1024) + // Read the incoming connection into the buffer. + reqLen, err := conn.Read(buf) + if err != nil { + fmt.Println("Error reading:", err.Error()) + } + fmt.Println(reqLen) + fmt.Println(string(buf)) + // Send a response back to person contacting us. + conn.Write([]byte(`\ka\\final\`)) + // Close the connection when you're done with it. + conn.Close() +} diff --git a/main.go b/main.go new file mode 100644 index 0000000..9a09e8b --- /dev/null +++ b/main.go @@ -0,0 +1,22 @@ +package main + +import ( + "sync" + "wwfc/gpcm" + "wwfc/gpsp" + "wwfc/nas" +) + +func main() { + wg := &sync.WaitGroup{} + actions := []func(){nas.StartServer, gpcm.StartServer, gpsp.StartServer} + wg.Add(3) + for _, action := range actions { + go func(ac func()) { + defer wg.Done() + ac() + }(action) + } + + wg.Wait() +} diff --git a/nas/login.go b/nas/login.go new file mode 100644 index 0000000..94238af --- /dev/null +++ b/nas/login.go @@ -0,0 +1,37 @@ +package nas + +import ( + "encoding/base64" + "net/url" + "strconv" + "strings" + "wwfc/database" +) + +// TODO: Generate and store in database!!! +const Challenge = "0qUekMb4" + +func login(r *Response) { + // Validate the user id. It must be an integer. + strUserId, _ := base64.StdEncoding.DecodeString(strings.Replace(r.request.PostForm.Get("userid"), "*", "=", -1)) + userId, err := strconv.Atoi(string(strUserId)) + if err != nil { + panic(err) + } + + gsbrcd, _ := base64.StdEncoding.DecodeString(strings.Replace(r.request.PostForm.Get("gsbrcd"), "*", "=", -1)) + authToken := database.GenerateAuthToken(pool, ctx, userId, string(gsbrcd)) + + param := url.Values{} + // param.Set("datetime", strings.Replace(base64.StdEncoding.EncodeToString([]byte("20230911232518")), "=", "*", -1)) + param.Set("retry", strings.Replace(base64.StdEncoding.EncodeToString([]byte("0")), "=", "*", -1)) + param.Set("returncd", strings.Replace(base64.StdEncoding.EncodeToString([]byte("001")), "=", "*", -1)) + param.Set("locator", strings.Replace(base64.StdEncoding.EncodeToString([]byte("gamespy.com")), "=", "*", -1)) + param.Set("challenge", strings.Replace(base64.StdEncoding.EncodeToString([]byte(Challenge)), "=", "*", -1)) + param.Set("token", strings.Replace(base64.StdEncoding.EncodeToString([]byte(authToken)), "=", "*", -1)) + + // Encode and send off to be written! + r.payload = []byte(param.Encode()) + r.payload = []byte(param.Encode()) + r.payload = []byte(strings.Replace(string(r.payload), "%2A", "*", -1)) +} diff --git a/nas/main.go b/nas/main.go new file mode 100644 index 0000000..518fed0 --- /dev/null +++ b/nas/main.go @@ -0,0 +1,43 @@ +package nas + +import ( + "context" + "fmt" + "github.com/jackc/pgx/v4/pgxpool" + "log" + "wwfc/common" + "wwfc/nhttp" +) + +var ( + ctx = context.Background() + pool *pgxpool.Pool +) + +func checkError(err error) { + if err != nil { + log.Fatalf("NAS server has encountered a fatal error! Reason: %v\n", err) + } +} + +func StartServer() { + // Get config + config := common.GetConfig() + + // Start SQL + dbString := fmt.Sprintf("postgres://%s:%s@%s/%s", config.Username, config.Password, config.DatabaseAddress, config.DatabaseName) + dbConf, err := pgxpool.ParseConfig(dbString) + checkError(err) + pool, err = pgxpool.ConnectConfig(ctx, dbConf) + checkError(err) + + // Finally, initialize the HTTP server + fmt.Printf("Starting HTTP connection (%s)...\nNot using the usual port for HTTP?\nBe sure to use a proxy, otherwise the Wii can't connect!\n", "[::1]") + r := NewRoute() + ac := r.HandleGroup("ac") + { + ac.HandleAction("login", login) + } + + log.Fatal(nhttp.ListenAndServe("0.0.0.0:80", r.Handle())) +} diff --git a/nas/route.go b/nas/route.go new file mode 100644 index 0000000..74da67f --- /dev/null +++ b/nas/route.go @@ -0,0 +1,92 @@ +package nas + +import ( + "encoding/base64" + "github.com/logrusorgru/aurora/v3" + "log" + "net/http" + "strconv" + "strings" +) + +type Route struct { + Actions []Action +} + +// Action contains information about how a specified action should be handled. +type Action struct { + ActionName string + Callback func(*Response) + ServiceType string +} + +func NewRoute() Route { + return Route{} +} + +// RoutingGroup defines a group of actions for a given service type. +type RoutingGroup struct { + Route *Route + ServiceType string +} + +// HandleGroup returns a routing group type for the given service type. +func (route *Route) HandleGroup(serviceType string) RoutingGroup { + return RoutingGroup{ + Route: route, + ServiceType: serviceType, + } +} + +func (r *RoutingGroup) HandleAction(action string, function func(*Response)) { + r.Route.Actions = append(r.Route.Actions, Action{ + ActionName: action, + Callback: function, + ServiceType: r.ServiceType, + }) +} + +func (route *Route) Handle() http.Handler { + return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + log.Printf("%s %s via %s", aurora.Yellow(r.Method), aurora.Cyan(r.URL), aurora.Cyan(r.Host)) + err := r.ParseForm() + if err != nil { + log.Printf(aurora.Red("failed to parse form").String()) + return + } + + // While generally a bad idea, we can only have a path with a depth of one. + path := strings.Replace(r.URL.Path, "/", "", -1) + actionName, _ := base64.StdEncoding.DecodeString(strings.Replace(r.PostForm.Get("action"), "*", "=", -1)) + + var action Action + for _, _action := range route.Actions { + if path == _action.ServiceType && string(actionName) == _action.ActionName { + action = _action + } + } + + // Make sure we found an action + if action.ActionName == "" && action.ServiceType == "" { + log.Printf(aurora.Red("no action found").String()) + return + } + + response := NewResponse(&w, r) + action.Callback(response) + + // Our callback function will already have formulated the needed response. + // We will write common headers then the data. + w.Header().Set("NODE", "wifiappe1") + w.Header().Set("Content-Type", "text/plain") + w.Header().Set("Content-Length", strconv.Itoa(len(response.payload))) + w.Write(response.payload) + }) +} + +func NewResponse(w *http.ResponseWriter, r *http.Request) *Response { + return &Response{ + request: r, + writer: w, + } +} diff --git a/nas/structure.go b/nas/structure.go new file mode 100644 index 0000000..8d20332 --- /dev/null +++ b/nas/structure.go @@ -0,0 +1,9 @@ +package nas + +import "net/http" + +type Response struct { + request *http.Request + writer *http.ResponseWriter + payload []byte +}