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// 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"
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"
"code.gitea.io/gitea/services/context"
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 any) {
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(
ctx,
&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.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)
}
func isValidNameAndVersion(packageName, packageVersion string) bool {
return nameMatcher.MatchString(packageName) && versionMatcher.MatchString(packageVersion)
}
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