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forgejo/routers/api/packages/pypi/pypi.go
KN4CK3R c890454769
Add direct serving of package content (#25543)
Fixes #24723

Direct serving of content aka HTTP redirect is not mentioned in any of
the package registry specs but lots of official registries do that so it
should be supported by the usual clients.
2023-07-03 15:33:28 +02:00

193 lines
5.8 KiB
Go

// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package pypi
import (
"encoding/hex"
"io"
"net/http"
"regexp"
"sort"
"strings"
packages_model "code.gitea.io/gitea/models/packages"
"code.gitea.io/gitea/modules/context"
packages_module "code.gitea.io/gitea/modules/packages"
pypi_module "code.gitea.io/gitea/modules/packages/pypi"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/validation"
"code.gitea.io/gitea/routers/api/packages/helper"
packages_service "code.gitea.io/gitea/services/packages"
)
// https://peps.python.org/pep-0426/#name
var (
normalizer = strings.NewReplacer(".", "-", "_", "-")
nameMatcher = regexp.MustCompile(`\A(?:[a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\.\-_]*[a-zA-Z0-9])\z`)
)
// https://peps.python.org/pep-0440/#appendix-b-parsing-version-strings-with-regular-expressions
var versionMatcher = regexp.MustCompile(`\Av?` +
`(?:[0-9]+!)?` + // epoch
`[0-9]+(?:\.[0-9]+)*` + // release segment
`(?:[-_\.]?(?:a|b|c|rc|alpha|beta|pre|preview)[-_\.]?[0-9]*)?` + // pre-release
`(?:-[0-9]+|[-_\.]?(?:post|rev|r)[-_\.]?[0-9]*)?` + // post release
`(?:[-_\.]?dev[-_\.]?[0-9]*)?` + // dev release
`(?:\+[a-z0-9]+(?:[-_\.][a-z0-9]+)*)?` + // local version
`\z`)
func apiError(ctx *context.Context, status int, obj interface{}) {
helper.LogAndProcessError(ctx, status, obj, func(message string) {
ctx.PlainText(status, message)
})
}
// PackageMetadata returns the metadata for a single package
func PackageMetadata(ctx *context.Context) {
packageName := normalizer.Replace(ctx.Params("id"))
pvs, err := packages_model.GetVersionsByPackageName(ctx, ctx.Package.Owner.ID, packages_model.TypePyPI, packageName)
if err != nil {
apiError(ctx, http.StatusInternalServerError, err)
return
}
if len(pvs) == 0 {
apiError(ctx, http.StatusNotFound, err)
return
}
pds, err := packages_model.GetPackageDescriptors(ctx, pvs)
if err != nil {
apiError(ctx, http.StatusInternalServerError, err)
return
}
// sort package descriptors by version to mimic PyPI format
sort.Slice(pds, func(i, j int) bool {
return strings.Compare(pds[i].Version.Version, pds[j].Version.Version) < 0
})
ctx.Data["RegistryURL"] = setting.AppURL + "api/packages/" + ctx.Package.Owner.Name + "/pypi"
ctx.Data["PackageDescriptor"] = pds[0]
ctx.Data["PackageDescriptors"] = pds
ctx.HTML(http.StatusOK, "api/packages/pypi/simple")
}
// DownloadPackageFile serves the content of a package
func DownloadPackageFile(ctx *context.Context) {
packageName := normalizer.Replace(ctx.Params("id"))
packageVersion := ctx.Params("version")
filename := ctx.Params("filename")
s, u, pf, err := packages_service.GetFileStreamByPackageNameAndVersion(
ctx,
&packages_service.PackageInfo{
Owner: ctx.Package.Owner,
PackageType: packages_model.TypePyPI,
Name: packageName,
Version: packageVersion,
},
&packages_service.PackageFileInfo{
Filename: 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)
}
// UploadPackageFile adds a file to the package. If the package does not exist, it gets created.
func UploadPackageFile(ctx *context.Context) {
file, fileHeader, err := ctx.Req.FormFile("content")
if err != nil {
apiError(ctx, http.StatusBadRequest, err)
return
}
defer file.Close()
buf, err := packages_module.CreateHashedBufferFromReader(file)
if err != nil {
apiError(ctx, http.StatusInternalServerError, err)
return
}
defer buf.Close()
_, _, hashSHA256, _ := buf.Sums()
if !strings.EqualFold(ctx.Req.FormValue("sha256_digest"), hex.EncodeToString(hashSHA256)) {
apiError(ctx, http.StatusBadRequest, "hash mismatch")
return
}
if _, err := buf.Seek(0, io.SeekStart); err != nil {
apiError(ctx, http.StatusInternalServerError, err)
return
}
packageName := normalizer.Replace(ctx.Req.FormValue("name"))
packageVersion := ctx.Req.FormValue("version")
if !isValidNameAndVersion(packageName, packageVersion) {
apiError(ctx, http.StatusBadRequest, "invalid name or version")
return
}
projectURL := ctx.Req.FormValue("home_page")
if !validation.IsValidURL(projectURL) {
projectURL = ""
}
_, _, err = packages_service.CreatePackageOrAddFileToExisting(
&packages_service.PackageCreationInfo{
PackageInfo: packages_service.PackageInfo{
Owner: ctx.Package.Owner,
PackageType: packages_model.TypePyPI,
Name: packageName,
Version: packageVersion,
},
SemverCompatible: false,
Creator: ctx.Doer,
Metadata: &pypi_module.Metadata{
Author: ctx.Req.FormValue("author"),
Description: ctx.Req.FormValue("description"),
LongDescription: ctx.Req.FormValue("long_description"),
Summary: ctx.Req.FormValue("summary"),
ProjectURL: projectURL,
License: ctx.Req.FormValue("license"),
RequiresPython: ctx.Req.FormValue("requires_python"),
},
},
&packages_service.PackageFileCreationInfo{
PackageFileInfo: packages_service.PackageFileInfo{
Filename: fileHeader.Filename,
},
Creator: ctx.Doer,
Data: buf,
IsLead: true,
},
)
if err != nil {
switch err {
case packages_model.ErrDuplicatePackageFile:
apiError(ctx, http.StatusBadRequest, 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)
}
func isValidNameAndVersion(packageName, packageVersion string) bool {
return nameMatcher.MatchString(packageName) && versionMatcher.MatchString(packageVersion)
}