/
versions.go
270 lines (216 loc) · 5.72 KB
/
versions.go
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package launcher
import (
"crypto/sha1"
"errors"
"fmt"
"path/filepath"
"strings"
"github.com/brawaru/marct/globstate"
"github.com/brawaru/marct/launcher/download"
"github.com/brawaru/marct/locales"
"github.com/brawaru/marct/network"
"github.com/brawaru/marct/utils/slices"
"github.com/brawaru/marct/validfile"
"github.com/nicksnyder/go-i18n/v2/i18n"
)
// badChars contains all characters that are not allowed in popular filesystems file names like NTFS, ext4, etc.
var badChars = []rune{
'<',
'>',
':',
'"',
'/',
'\\',
'|',
'?',
'*',
}
func validateID(id string) error {
for _, c := range badChars {
if strings.ContainsRune(id, c) {
return fmt.Errorf("invalid character %U in version ID", c)
}
}
return nil
}
func (w *Instance) VersionFolderPath(id string) (string, error) {
if err := validateID(id); err != nil {
return "", err
}
return filepath.Join(w.Path, "versions", id), nil
}
func (w *Instance) VersionFilePath(id string, ext string) (string, error) {
f, err := w.VersionFolderPath(id)
if err != nil {
return "", err
}
return filepath.Join(f, id+"."+ext), nil
}
func (w *Instance) DownloadVersionFile(descriptor VersionDescriptor) error {
dest, err := w.VersionFilePath(descriptor.ID, "json")
if err != nil {
return fmt.Errorf("create path for %s: %w", descriptor.ID, err)
}
if err := download.FromURL(descriptor.URL, dest, download.WithSHA1(descriptor.SHA1)); err != nil {
return fmt.Errorf("download %q to %q: %w", descriptor.URL, dest, err)
}
if globstate.VerboseLogs {
println(locales.TranslateUsing(&i18n.LocalizeConfig{
TemplateData: map[string]string{
"TypeFile": dest,
},
DefaultMessage: &i18n.Message{
ID: "log.verbose.version-file-downloaded",
Other: "downloaded version file: {{ .TypeFile }}",
},
}))
}
return nil
}
func (w *Instance) ReadVersionFile(id string) (v *Version, err error) {
if path, e := w.VersionFilePath(id, "json"); e == nil {
err = unmarshalJSONFile(path, &v)
} else {
err = fmt.Errorf("path version file %q: %w", id, e)
}
return
}
func (w *Instance) ReadVersionWithInherits(id string) (*Version, error) {
var all []Version // fabric-..., 1.18.1
var allIDs []string
currentID := id
for currentID != "" {
v, err := w.ReadVersionFile(currentID)
if err != nil {
return nil, fmt.Errorf("cannot read %q: %w", currentID, err)
}
all = append(all, *v)
if v.InheritsFrom == nil {
break
}
nextID := *v.InheritsFrom
if nextID == currentID {
return nil, fmt.Errorf("%q self-references itself for inheritance", currentID)
} else if slices.Includes(allIDs, nextID) {
var chain string
for i, e := range allIDs {
if i != 0 {
chain += " -> "
}
chain += e
}
if chain != "" {
chain += " -> "
}
chain += nextID
return nil, fmt.Errorf("%q contains a circular reference: %s", currentID, chain)
}
allIDs = append(allIDs, currentID)
currentID = nextID
}
l := len(all)
switch {
case l > 1:
v := all[l-1]
for i := l - 2; i >= 0; i-- {
c := all[i]
r, err := MergeVersions(v, c)
if err != nil {
return nil, fmt.Errorf("cannot merge %q with %q", c.ID, v.ID)
}
v = r
}
return &v, nil
case l == 1:
return &all[0], nil
}
return nil, errors.New("no versions to inherit")
}
func (w *Instance) downloadClientJar(versionFile Version) error {
downloads := versionFile.Downloads
if downloads == nil {
return &DownloadUnavailableError{"client"}
}
clientDownload, hasClientDownload := downloads["client"]
if !hasClientDownload {
return &DownloadUnavailableError{"client"}
}
clientJarPath, err := w.VersionFilePath(versionFile.ID, "jar")
if err != nil {
return fmt.Errorf("cannot get path for client JAR: %w", err)
}
shouldDownload := false
if clientDownload.SHA1 == "" {
exists, existsErr := validfile.FileExists(clientJarPath)
if existsErr != nil {
return existsErr
}
shouldDownload = !exists
} else {
validateErr := validfile.ValidateFileHex(clientJarPath, sha1.New(), clientDownload.SHA1)
if validateErr != nil {
var v *validfile.ValidateError
if errors.As(validateErr, &v) && v.Mismatch() {
shouldDownload = true
} else {
return validateErr
}
}
}
if shouldDownload {
if _, err := network.Download(clientDownload.URL, clientJarPath); err != nil {
return err
}
if clientDownload.SHA1 != "" {
if err := validfile.ValidateFileHex(clientJarPath, sha1.New(), clientDownload.SHA1); err != nil {
return err
}
}
}
return nil
}
func (w *Instance) DownloadVersion(versionFile Version) error {
// TODO: download all inherits if there any
clientJarDlErr := w.downloadClientJar(versionFile)
if clientJarDlErr != nil {
if errors.Is(clientJarDlErr, &DownloadUnavailableError{}) {
if globstate.VerboseLogs {
println(locales.TranslateUsing(&i18n.LocalizeConfig{
TemplateData: map[string]string{
"ID": versionFile.ID,
},
DefaultMessage: &i18n.Message{
ID: "logs.warn.client-jar-unavailable",
Other: "no client jar downloads available for {{ .ID }}",
},
}))
}
} else {
return clientJarDlErr
}
}
if versionFile.Libraries != nil {
if libDlErr := w.DownloadLibraries(versionFile.Libraries); libDlErr != nil {
return libDlErr
}
}
if versionFile.AssetIndex != nil {
indexDesc := *versionFile.AssetIndex
if indexDlErr := w.DownloadAssetIndex(indexDesc); indexDlErr != nil {
return indexDlErr
}
index, readErr := w.ReadAssetIndex(indexDesc.ID)
if readErr != nil {
return readErr
}
if dlErr := w.DownloadAssets(*index); dlErr != nil {
return dlErr
}
}
if logConfig, hasLogConfig := versionFile.Logging["client"]; hasLogConfig {
if logDlErr := w.DownloadLogConfig(logConfig); logDlErr != nil {
return logDlErr
}
}
return nil
}