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// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package generic
import (
"errors"
"net/http"
"regexp"
"strings"
"unicode"
packages_model "code.gitea.io/gitea/models/packages"
"code.gitea.io/gitea/modules/log"
packages_module "code.gitea.io/gitea/modules/packages"
"code.gitea.io/gitea/routers/api/packages/helper"
"code.gitea.io/gitea/services/context"
packages_service "code.gitea.io/gitea/services/packages"
)
var (
packageNameRegex = regexp.MustCompile(`\A[-_+.\w]+\z`)
filenameRegex = regexp.MustCompile(`\A[-_+=:;.()\[\]{}~!@#$%^& \w]+\z`)
)
func apiError(ctx *context.Context, status int, obj any) {
helper.LogAndProcessError(ctx, status, obj, func(message string) {
ctx.PlainText(status, message)
})
}
// DownloadPackageFile serves the specific generic package.
func DownloadPackageFile(ctx *context.Context) {
s, u, pf, err := packages_service.GetFileStreamByPackageNameAndVersion(
ctx,
&packages_service.PackageInfo{
Owner: ctx.Package.Owner,
PackageType: packages_model.TypeGeneric,
Name: ctx.Params("packagename"),
Version: ctx.Params("packageversion"),
},
&packages_service.PackageFileInfo{
Filename: ctx.Params("filename"),
},
)
if err != nil {
if err == packages_model.ErrPackageNotExist || err == packages_model.ErrPackageFileNotExist {
apiError(ctx, http.StatusNotFound, err)
return
}
apiError(ctx, http.StatusInternalServerError, err)
return
}
helper.ServePackageFile(ctx, s, u, pf)
}
func isValidPackageName(packageName string) bool {
if len(packageName) == 1 && !unicode.IsLetter(rune(packageName[0])) && !unicode.IsNumber(rune(packageName[0])) {
return false
}
return packageNameRegex.MatchString(packageName) && packageName != ".."
}
func isValidFileName(filename string) bool {
return filenameRegex.MatchString(filename) &&
strings.TrimSpace(filename) == filename &&
filename != "." && filename != ".."
}
// UploadPackage uploads the specific generic package.
// Duplicated packages get rejected.
func UploadPackage(ctx *context.Context) {
packageName := ctx.Params("packagename")
filename := ctx.Params("filename")
if !isValidPackageName(packageName) {
apiError(ctx, http.StatusBadRequest, errors.New("invalid package name"))
return
}
if !isValidFileName(filename) {
apiError(ctx, http.StatusBadRequest, errors.New("invalid filename"))
return
}
packageVersion := ctx.Params("packageversion")
if packageVersion != strings.TrimSpace(packageVersion) {
apiError(ctx, http.StatusBadRequest, errors.New("invalid package version"))
return
}
upload, needToClose, err := ctx.UploadStream()
if err != nil {
apiError(ctx, http.StatusInternalServerError, err)
return
}
if needToClose {
defer upload.Close()
}
buf, err := packages_module.CreateHashedBufferFromReader(upload)
if err != nil {
log.Error("Error creating hashed buffer: %v", err)
apiError(ctx, http.StatusInternalServerError, err)
return
}
defer buf.Close()
_, _, err = packages_service.CreatePackageOrAddFileToExisting(
ctx,
&packages_service.PackageCreationInfo{
PackageInfo: packages_service.PackageInfo{
Owner: ctx.Package.Owner,
PackageType: packages_model.TypeGeneric,
Name: packageName,
Version: packageVersion,
},
Creator: ctx.Doer,
},
&packages_service.PackageFileCreationInfo{
PackageFileInfo: packages_service.PackageFileInfo{
Filename: filename,
},
Creator: ctx.Doer,
Data: buf,
IsLead: true,
},
)
if err != nil {
switch err {
case packages_model.ErrDuplicatePackageFile:
apiError(ctx, http.StatusConflict, err)
case packages_service.ErrQuotaTotalCount, packages_service.ErrQuotaTypeSize, packages_service.ErrQuotaTotalSize:
apiError(ctx, http.StatusForbidden, err)
default:
apiError(ctx, http.StatusInternalServerError, err)
}
return
}
ctx.Status(http.StatusCreated)
}
// DeletePackage deletes the specific generic package.
func DeletePackage(ctx *context.Context) {
err := packages_service.RemovePackageVersionByNameAndVersion(
ctx,
ctx.Doer,
&packages_service.PackageInfo{
Owner: ctx.Package.Owner,
PackageType: packages_model.TypeGeneric,
Name: ctx.Params("packagename"),
Version: ctx.Params("packageversion"),
},
)
if err != nil {
if err == packages_model.ErrPackageNotExist {
apiError(ctx, http.StatusNotFound, err)
return
}
apiError(ctx, http.StatusInternalServerError, err)
return
}
ctx.Status(http.StatusNoContent)
}
// DeletePackageFile deletes the specific file of a generic package.
func DeletePackageFile(ctx *context.Context) {
pv, pf, err := func() (*packages_model.PackageVersion, *packages_model.PackageFile, error) {
pv, err := packages_model.GetVersionByNameAndVersion(ctx, ctx.Package.Owner.ID, packages_model.TypeGeneric, ctx.Params("packagename"), ctx.Params("packageversion"))
if err != nil {
return nil, nil, err
}
pf, err := packages_model.GetFileForVersionByName(ctx, pv.ID, ctx.Params("filename"), packages_model.EmptyFileKey)
if err != nil {
return nil, nil, err
}
return pv, pf, nil
}()
if err != nil {
if err == packages_model.ErrPackageNotExist || err == packages_model.ErrPackageFileNotExist {
apiError(ctx, http.StatusNotFound, err)
return
}
apiError(ctx, http.StatusInternalServerError, err)
return
}
pfs, err := packages_model.GetFilesByVersionID(ctx, pv.ID)
if err != nil {
apiError(ctx, http.StatusInternalServerError, err)
return
}
if len(pfs) == 1 {
if err := packages_service.RemovePackageVersion(ctx, ctx.Doer, pv); err != nil {
apiError(ctx, http.StatusInternalServerError, err)
return
}
} else {
if err := packages_service.DeletePackageFile(ctx, pf); err != nil {
apiError(ctx, http.StatusInternalServerError, err)
return
}
}
ctx.Status(http.StatusNoContent)
}
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