Working on downloading minecraft assets
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190
main.go
190
main.go
@ -2,6 +2,8 @@ package main
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import (
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"bytes"
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"crypto/sha1"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"io"
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@ -9,6 +11,7 @@ import (
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"net/url"
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"os"
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"path/filepath"
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"strings"
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"time"
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)
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@ -19,6 +22,7 @@ type Authentication struct {
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XboxAuth xboxAuthResponse
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XboxAPI xboxAuthResponse
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McAPI xboxAuthResponse
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McAuth McAuthResponse
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}
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type devCodeResp struct {
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@ -88,11 +92,100 @@ type McAuthRequest struct {
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Platform string `json:"platform"`
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}
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type McAuthRequest2 struct {
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IdentityToken string `json:"identityToken"`
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EnsureLegacyEnabled bool `json:"ensureLegacyEnabled"`
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type McAuthResponse struct {
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Username string
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Access_token string
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Expires_in int
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token_type string
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}
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type McVersionManifestEntry struct {
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Id string
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Type string
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Url string
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Time time.Time
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ReleaseTime time.Time
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Sha1 string
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ComplianceLevel int
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}
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type McLatestEntry struct {
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Release string
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Snapshot string
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}
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type McVersionManifest struct {
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Latest McLatestEntry
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Versions []McVersionManifestEntry
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}
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type McArguments struct {
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Game interface{}
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Jvm interface{}
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}
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type McAssetIndex struct {
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Id string
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Sha1 string
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Size int
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TotalSize int
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Url string
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}
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type McDownload struct {
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Sha1 string
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Size int
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Url string
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}
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type McDownloads struct {
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Client []McDownload
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Client_mappings []McDownload
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Server []McDownload
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Server_mappings []McDownload
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}
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type McJavaVersion struct {
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Component string
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MajorVersion int
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}
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type McLibraryArtifact struct {
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Path string
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Sha1 string
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Size int
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Url string
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}
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type McLibraryDownload struct {
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Artifact McLibraryArtifact
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}
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type McLibrary struct {
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Downloads McLibraryDownload
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Name string
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Rules interface{}
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}
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type McMetadata struct {
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Arguments McArguments
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AssetIndex McAssetIndex
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Assets string
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complianceLevel int
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Downloads McDownloads
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Id string
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JavaVersion McJavaVersion
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Libraries []McLibrary
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Logging interface{}
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MainClass string
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MinimumLauncherVersion int
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ReleaseTime time.Time
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Time time.Time
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Type string
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}
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func main() {
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auth := Authentication{}
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@ -219,9 +312,8 @@ func main() {
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if auth.McAPI.DisplayClaims.Xui[0].Uhs != auth.XboxAPI.DisplayClaims.Xui[0].Uhs {
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fmt.Printf("Warning: Inconsistant user hash!")
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}
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mcAuthData, _ := json.Marshal(McAuthRequest2{IdentityToken: "XBL3.0 x=" + auth.McAPI.DisplayClaims.Xui[0].Uhs + ";" + auth.McAPI.Token, EnsureLegacyEnabled: true})
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fmt.Printf("MC Auth Data: %s\n", mcAuthData)
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httpReqMC, _ := http.NewRequest("POST", "https://api.minecraftservices.com/authentication/login_with_xbox", bytes.NewBuffer(mcAuthData))
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mcAuthData, _ := json.Marshal(McAuthRequest{Xtoken: "XBL3.0 x=" + auth.McAPI.DisplayClaims.Xui[0].Uhs + ";" + auth.McAPI.Token, Platform: "PC_LAUNCHER"})
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httpReqMC, _ := http.NewRequest("POST", "https://api.minecraftservices.com/launcher/login", bytes.NewBuffer(mcAuthData))
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httpReqMC.Header.Add("Content-Type", "application/json")
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httpReqMC.Header.Add("Accept", "application/json")
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resp, err := client.Do(httpReqMC)
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@ -233,7 +325,91 @@ func main() {
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fmt.Printf("MC Auth Error: %s\n", resp.Status)
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}
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d, _ = io.ReadAll(resp.Body)
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fmt.Printf("MC Auth Response: %s\n", d)
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json.Unmarshal(d, &auth.McAuth)
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resp, err = http.Get("https://piston-meta.mojang.com/mc/game/version_manifest_v2.json")
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if err != nil {
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fmt.Printf("manifest error")
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}
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defer resp.Body.Close()
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data, _ = io.ReadAll(resp.Body)
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versionManifest := McVersionManifest{}
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json.Unmarshal(data, &versionManifest)
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resp, err = http.Get(versionManifest.Versions[0].Url)
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if err != nil {
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fmt.Printf("metadata error")
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}
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defer resp.Body.Close()
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data, _ = io.ReadAll(resp.Body)
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var metadata McMetadata
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json.Unmarshal(data, &metadata)
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resp, err = http.Get(metadata.AssetIndex.Url)
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if err != nil {
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fmt.Printf("asset index error")
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}
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defer resp.Body.Close()
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data, _ = io.ReadAll(resp.Body)
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sha := sha1.Sum(data)
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if hex.EncodeToString(sha[:20]) != metadata.AssetIndex.Sha1 {
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fmt.Printf("Error downloading asset index")
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return
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}
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var index map[string]interface{}
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json.Unmarshal(data, &index)
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index = index["objects"].(map[string]interface{})
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for name, asset := range index {
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asset_map := asset.(map[string]interface{})
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if _, err = os.Stat(filepath.Join(dir, "minecraft_test", "assets", metadata.Assets, name)); err == nil {
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f, _ := os.OpenFile(filepath.Join(dir, "minecraft_test", "assets", metadata.Assets, name), os.O_RDONLY, 0755)
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data, _ := io.ReadAll(f)
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sha := sha1.Sum(data)
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if hex.EncodeToString(sha[:20]) == asset_map["hash"].(string) {
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continue
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}
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}
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fmt.Printf("Downloading %s: ", name)
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resp, err = http.Get(fmt.Sprintf("https://resources.download.minecraft.net/%s/%s", asset_map["hash"].(string)[:2], asset_map["hash"].(string)))
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if err != nil {
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fmt.Printf("Error\n")
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return
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}
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defer resp.Body.Close()
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data, _ = io.ReadAll(resp.Body)
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sha = sha1.Sum(data)
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if hex.EncodeToString(sha[:20]) != asset_map["hash"].(string) {
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fmt.Printf("Sha1 Mismatch\n")
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return
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}
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fmt.Printf("Ok\n")
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path := ""
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tokens := strings.Split(name, "/")
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for ind, token := range tokens {
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if ind != len(tokens)-1 {
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path = filepath.Join(path, token)
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}
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}
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os.MkdirAll(filepath.Join(dir, "minecraft_test", "assets", metadata.Assets, path), 0755)
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f, _ := os.OpenFile(filepath.Join(dir, "minecraft_test", "assets", metadata.Assets, name), os.O_CREATE|os.O_RDWR, 0755)
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defer f.Close()
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f.Write(data)
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}
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for _, lib := range metadata.Libraries {
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fmt.Printf("Downloading %s: ", lib.Name)
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resp, err = http.Get(lib.Downloads.Artifact.Url)
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if err != nil {
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fmt.Printf("Error\n")
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return
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}
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defer resp.Body.Close()
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data, _ = io.ReadAll(resp.Body)
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sha = sha1.Sum(data)
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if hex.EncodeToString(sha[:20]) != lib.Downloads.Artifact.Sha1 {
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fmt.Printf("Sha1 Mismatch\n")
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return
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}
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fmt.Printf("OK\n")
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}
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/*
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fmt.Println("Requesting Oauth")
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